/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/fibo_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:07:49,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:07:49,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:07:49,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 22:07:49,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:07:49,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:07:49,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:07:49,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:07:49,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:07:49,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:07:49,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:07:49,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:07:49,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:07:49,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:07:49,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:07:49,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:07:49,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:07:49,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:07:49,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:07:49,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:07:49,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:07:49,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:07:49,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:07:49,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:07:49,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:07:49,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:07:49,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:07:49,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:07:49,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:07:49,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:07:49,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:07:49,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:07:49,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:07:49,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:07:49,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:07:49,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:07:49,827 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:07:49,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:07:49,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:07:49,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:07:49,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:07:49,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:07:49,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:07:49,829 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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 [2020-08-22 22:07:50,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:07:50,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:07:50,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:07:50,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:07:50,117 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:07:50,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-08-22 22:07:50,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14a8f595/e7603d84eb2746279fb7bf27a8d7cae9/FLAGd4193e848 [2020-08-22 22:07:50,613 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:07:50,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-08-22 22:07:50,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14a8f595/e7603d84eb2746279fb7bf27a8d7cae9/FLAGd4193e848 [2020-08-22 22:07:51,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14a8f595/e7603d84eb2746279fb7bf27a8d7cae9 [2020-08-22 22:07:51,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:07:51,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:07:51,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:07:51,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:07:51,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:07:51,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:07:51" (1/1) ... [2020-08-22 22:07:51,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1a841d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51, skipping insertion in model container [2020-08-22 22:07:51,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:07:51" (1/1) ... [2020-08-22 22:07:51,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:07:51,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:07:51,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:07:51,212 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:07:51,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:07:51,242 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:07:51,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51 WrapperNode [2020-08-22 22:07:51,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:07:51,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:07:51,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:07:51,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:07:51,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51" (1/1) ... [2020-08-22 22:07:51,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51" (1/1) ... [2020-08-22 22:07:51,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51" (1/1) ... [2020-08-22 22:07:51,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51" (1/1) ... [2020-08-22 22:07:51,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51" (1/1) ... [2020-08-22 22:07:51,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51" (1/1) ... [2020-08-22 22:07:51,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51" (1/1) ... [2020-08-22 22:07:51,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:07:51,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:07:51,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:07:51,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:07:51,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51" (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 [2020-08-22 22:07:51,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:07:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:07:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-22 22:07:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-22 22:07:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:07:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:07:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:07:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-22 22:07:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-22 22:07:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:07:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:07:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:07:51,632 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:07:51,633 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 22:07:51,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:07:51 BoogieIcfgContainer [2020-08-22 22:07:51,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:07:51,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:07:51,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:07:51,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:07:51,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:07:51" (1/3) ... [2020-08-22 22:07:51,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306da549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:07:51, skipping insertion in model container [2020-08-22 22:07:51,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:07:51" (2/3) ... [2020-08-22 22:07:51,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306da549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:07:51, skipping insertion in model container [2020-08-22 22:07:51,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:07:51" (3/3) ... [2020-08-22 22:07:51,646 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-08-22 22:07:51,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:07:51,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:07:51,687 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:07:51,714 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:07:51,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:07:51,714 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:07:51,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:07:51,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:07:51,715 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:07:51,715 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:07:51,715 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:07:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-08-22 22:07:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 22:07:51,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:51,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:51,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:51,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-08-22 22:07:51,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:51,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127167659] [2020-08-22 22:07:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:51,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:07:51,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127167659] [2020-08-22 22:07:51,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:07:51,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:07:51,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608797888] [2020-08-22 22:07:51,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:07:51,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:52,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:07:52,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:07:52,010 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-08-22 22:07:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:52,120 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-08-22 22:07:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 22:07:52,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 22:07:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:52,134 INFO L225 Difference]: With dead ends: 58 [2020-08-22 22:07:52,134 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 22:07:52,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:07:52,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 22:07:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-22 22:07:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 22:07:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-08-22 22:07:52,194 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-08-22 22:07:52,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:52,195 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-08-22 22:07:52,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:07:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-08-22 22:07:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 22:07:52,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:52,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:52,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:07:52,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:52,200 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-08-22 22:07:52,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:52,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604933989] [2020-08-22 22:07:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:07:52,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604933989] [2020-08-22 22:07:52,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:07:52,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:07:52,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116671885] [2020-08-22 22:07:52,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:07:52,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:52,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:07:52,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:07:52,266 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-08-22 22:07:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:52,335 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-08-22 22:07:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 22:07:52,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-22 22:07:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:52,338 INFO L225 Difference]: With dead ends: 50 [2020-08-22 22:07:52,338 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 22:07:52,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:07:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 22:07:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-08-22 22:07:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 22:07:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-08-22 22:07:52,353 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-08-22 22:07:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:52,354 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-08-22 22:07:52,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:07:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-08-22 22:07:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 22:07:52,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:52,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:52,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:07:52,357 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:52,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-08-22 22:07:52,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:52,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753168327] [2020-08-22 22:07:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 22:07:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:07:52,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753168327] [2020-08-22 22:07:52,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:52,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:07:52,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115140469] [2020-08-22 22:07:52,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:07:52,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:52,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:07:52,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:07:52,504 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-08-22 22:07:52,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:52,601 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-08-22 22:07:52,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:07:52,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-22 22:07:52,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:52,604 INFO L225 Difference]: With dead ends: 82 [2020-08-22 22:07:52,604 INFO L226 Difference]: Without dead ends: 46 [2020-08-22 22:07:52,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:07:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-08-22 22:07:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-08-22 22:07:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 22:07:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-08-22 22:07:52,620 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-08-22 22:07:52,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:52,620 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-08-22 22:07:52,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:07:52,621 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-08-22 22:07:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 22:07:52,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:52,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:52,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:07:52,624 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:52,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-08-22 22:07:52,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:52,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065980964] [2020-08-22 22:07:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:07:52,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065980964] [2020-08-22 22:07:52,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:52,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:07:52,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936653431] [2020-08-22 22:07:52,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:07:52,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:52,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:07:52,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:07:52,749 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-08-22 22:07:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:52,924 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2020-08-22 22:07:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 22:07:52,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-08-22 22:07:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:52,928 INFO L225 Difference]: With dead ends: 74 [2020-08-22 22:07:52,928 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 22:07:52,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:07:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 22:07:52,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-08-22 22:07:52,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 22:07:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-08-22 22:07:52,946 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 34 [2020-08-22 22:07:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:52,946 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-08-22 22:07:52,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:07:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-08-22 22:07:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 22:07:52,949 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:52,949 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:52,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:07:52,950 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:52,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 1 times [2020-08-22 22:07:52,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:52,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030499270] [2020-08-22 22:07:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:52,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 22:07:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 22:07:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 22:07:53,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030499270] [2020-08-22 22:07:53,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:53,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 22:07:53,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337928576] [2020-08-22 22:07:53,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:07:53,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:53,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:07:53,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:07:53,066 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 6 states. [2020-08-22 22:07:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:53,141 INFO L93 Difference]: Finished difference Result 130 states and 178 transitions. [2020-08-22 22:07:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:07:53,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-08-22 22:07:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:53,144 INFO L225 Difference]: With dead ends: 130 [2020-08-22 22:07:53,144 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 22:07:53,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:07:53,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 22:07:53,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-08-22 22:07:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-22 22:07:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2020-08-22 22:07:53,161 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 50 [2020-08-22 22:07:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:53,162 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2020-08-22 22:07:53,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:07:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2020-08-22 22:07:53,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 22:07:53,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:53,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:53,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:07:53,165 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:53,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:53,166 INFO L82 PathProgramCache]: Analyzing trace with hash 104828256, now seen corresponding path program 1 times [2020-08-22 22:07:53,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:53,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867180019] [2020-08-22 22:07:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 22:07:53,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867180019] [2020-08-22 22:07:53,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:53,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:07:53,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056125113] [2020-08-22 22:07:53,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:07:53,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:53,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:07:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:07:53,298 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand 8 states. [2020-08-22 22:07:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:53,405 INFO L93 Difference]: Finished difference Result 142 states and 197 transitions. [2020-08-22 22:07:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 22:07:53,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 22:07:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:53,408 INFO L225 Difference]: With dead ends: 142 [2020-08-22 22:07:53,408 INFO L226 Difference]: Without dead ends: 78 [2020-08-22 22:07:53,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:07:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-22 22:07:53,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-08-22 22:07:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-22 22:07:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2020-08-22 22:07:53,426 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 51 [2020-08-22 22:07:53,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:53,427 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2020-08-22 22:07:53,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:07:53,427 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2020-08-22 22:07:53,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 22:07:53,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:53,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:53,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:07:53,431 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:53,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:53,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-08-22 22:07:53,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:53,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680783266] [2020-08-22 22:07:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 22:07:53,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680783266] [2020-08-22 22:07:53,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:53,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:07:53,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744583991] [2020-08-22 22:07:53,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:07:53,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:53,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:07:53,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:07:53,602 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 8 states. [2020-08-22 22:07:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:53,800 INFO L93 Difference]: Finished difference Result 118 states and 158 transitions. [2020-08-22 22:07:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:07:53,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 22:07:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:53,804 INFO L225 Difference]: With dead ends: 118 [2020-08-22 22:07:53,804 INFO L226 Difference]: Without dead ends: 112 [2020-08-22 22:07:53,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:07:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-08-22 22:07:53,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2020-08-22 22:07:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-08-22 22:07:53,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 145 transitions. [2020-08-22 22:07:53,848 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 145 transitions. Word has length 52 [2020-08-22 22:07:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:53,849 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 145 transitions. [2020-08-22 22:07:53,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:07:53,849 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 145 transitions. [2020-08-22 22:07:53,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-22 22:07:53,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:53,852 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:53,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:07:53,853 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:53,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:53,853 INFO L82 PathProgramCache]: Analyzing trace with hash -521446491, now seen corresponding path program 1 times [2020-08-22 22:07:53,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:53,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748298548] [2020-08-22 22:07:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:53,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 22:07:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-22 22:07:54,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748298548] [2020-08-22 22:07:54,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:54,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:07:54,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621907567] [2020-08-22 22:07:54,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:07:54,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:54,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:07:54,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:07:54,044 INFO L87 Difference]: Start difference. First operand 106 states and 145 transitions. Second operand 8 states. [2020-08-22 22:07:54,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:54,167 INFO L93 Difference]: Finished difference Result 227 states and 348 transitions. [2020-08-22 22:07:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 22:07:54,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-08-22 22:07:54,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:54,170 INFO L225 Difference]: With dead ends: 227 [2020-08-22 22:07:54,171 INFO L226 Difference]: Without dead ends: 127 [2020-08-22 22:07:54,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:07:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-22 22:07:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2020-08-22 22:07:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-22 22:07:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2020-08-22 22:07:54,192 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 69 [2020-08-22 22:07:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:54,192 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2020-08-22 22:07:54,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:07:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2020-08-22 22:07:54,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 22:07:54,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:54,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:54,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:07:54,195 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:54,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:54,195 INFO L82 PathProgramCache]: Analyzing trace with hash -439633211, now seen corresponding path program 1 times [2020-08-22 22:07:54,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:54,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714105501] [2020-08-22 22:07:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 22:07:54,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714105501] [2020-08-22 22:07:54,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:54,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:07:54,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329868356] [2020-08-22 22:07:54,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:07:54,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:54,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:07:54,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:07:54,345 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand 10 states. [2020-08-22 22:07:54,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:54,576 INFO L93 Difference]: Finished difference Result 257 states and 400 transitions. [2020-08-22 22:07:54,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:07:54,577 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-08-22 22:07:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:54,580 INFO L225 Difference]: With dead ends: 257 [2020-08-22 22:07:54,580 INFO L226 Difference]: Without dead ends: 151 [2020-08-22 22:07:54,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:07:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-22 22:07:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 133. [2020-08-22 22:07:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 22:07:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2020-08-22 22:07:54,609 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 70 [2020-08-22 22:07:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:54,610 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2020-08-22 22:07:54,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:07:54,610 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2020-08-22 22:07:54,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-22 22:07:54,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:54,614 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:54,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:07:54,614 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:54,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:54,615 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 2 times [2020-08-22 22:07:54,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:54,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646951012] [2020-08-22 22:07:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 59 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-22 22:07:54,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646951012] [2020-08-22 22:07:54,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:54,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 22:07:54,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177933049] [2020-08-22 22:07:54,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 22:07:54,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:54,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 22:07:54,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:07:54,916 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand 12 states. [2020-08-22 22:07:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:55,291 INFO L93 Difference]: Finished difference Result 265 states and 420 transitions. [2020-08-22 22:07:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 22:07:55,295 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2020-08-22 22:07:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:55,298 INFO L225 Difference]: With dead ends: 265 [2020-08-22 22:07:55,298 INFO L226 Difference]: Without dead ends: 116 [2020-08-22 22:07:55,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:07:55,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-22 22:07:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 95. [2020-08-22 22:07:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-22 22:07:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2020-08-22 22:07:55,319 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 105 [2020-08-22 22:07:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:55,320 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2020-08-22 22:07:55,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 22:07:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2020-08-22 22:07:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-22 22:07:55,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:55,327 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:55,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:07:55,328 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:55,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1534580400, now seen corresponding path program 1 times [2020-08-22 22:07:55,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:55,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687390794] [2020-08-22 22:07:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 22:07:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 50 proven. 67 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-08-22 22:07:55,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687390794] [2020-08-22 22:07:55,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:55,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:07:55,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471023681] [2020-08-22 22:07:55,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:07:55,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:55,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:07:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:07:55,595 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand 10 states. [2020-08-22 22:07:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:55,786 INFO L93 Difference]: Finished difference Result 193 states and 255 transitions. [2020-08-22 22:07:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:07:55,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-08-22 22:07:55,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:55,788 INFO L225 Difference]: With dead ends: 193 [2020-08-22 22:07:55,788 INFO L226 Difference]: Without dead ends: 105 [2020-08-22 22:07:55,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:07:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-22 22:07:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-08-22 22:07:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-22 22:07:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2020-08-22 22:07:55,802 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 123 [2020-08-22 22:07:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:55,803 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2020-08-22 22:07:55,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:07:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2020-08-22 22:07:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-22 22:07:55,804 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:55,805 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:55,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:07:55,805 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash 822116120, now seen corresponding path program 2 times [2020-08-22 22:07:55,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:55,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896867174] [2020-08-22 22:07:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 22:07:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 72 proven. 111 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-08-22 22:07:56,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896867174] [2020-08-22 22:07:56,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:56,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 22:07:56,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677651567] [2020-08-22 22:07:56,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 22:07:56,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:56,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 22:07:56,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:07:56,051 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand 12 states. [2020-08-22 22:07:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:56,406 INFO L93 Difference]: Finished difference Result 241 states and 326 transitions. [2020-08-22 22:07:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 22:07:56,407 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 140 [2020-08-22 22:07:56,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:56,409 INFO L225 Difference]: With dead ends: 241 [2020-08-22 22:07:56,409 INFO L226 Difference]: Without dead ends: 141 [2020-08-22 22:07:56,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:07:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-22 22:07:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2020-08-22 22:07:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 22:07:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2020-08-22 22:07:56,431 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 140 [2020-08-22 22:07:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:56,432 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2020-08-22 22:07:56,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 22:07:56,432 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2020-08-22 22:07:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-22 22:07:56,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:56,434 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:56,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:07:56,435 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:56,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1260071360, now seen corresponding path program 2 times [2020-08-22 22:07:56,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:56,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142755953] [2020-08-22 22:07:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:07:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 26 proven. 126 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-08-22 22:07:56,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142755953] [2020-08-22 22:07:56,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:56,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:07:56,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750964152] [2020-08-22 22:07:56,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:07:56,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:56,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:07:56,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:07:56,672 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand 10 states. [2020-08-22 22:07:56,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:56,949 INFO L93 Difference]: Finished difference Result 244 states and 326 transitions. [2020-08-22 22:07:56,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:07:56,950 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2020-08-22 22:07:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:56,955 INFO L225 Difference]: With dead ends: 244 [2020-08-22 22:07:56,955 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 22:07:56,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:07:56,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 22:07:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 213. [2020-08-22 22:07:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 22:07:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 287 transitions. [2020-08-22 22:07:57,001 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 287 transitions. Word has length 140 [2020-08-22 22:07:57,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:57,001 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 287 transitions. [2020-08-22 22:07:57,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:07:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 287 transitions. [2020-08-22 22:07:57,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-22 22:07:57,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:57,006 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:57,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 22:07:57,006 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:57,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:57,007 INFO L82 PathProgramCache]: Analyzing trace with hash -88380307, now seen corresponding path program 3 times [2020-08-22 22:07:57,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:57,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757208609] [2020-08-22 22:07:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:07:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 22:07:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 179 proven. 163 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-08-22 22:07:57,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757208609] [2020-08-22 22:07:57,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:57,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 22:07:57,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222900620] [2020-08-22 22:07:57,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:07:57,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:57,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:07:57,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:07:57,516 INFO L87 Difference]: Start difference. First operand 213 states and 287 transitions. Second operand 14 states. [2020-08-22 22:07:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:57,994 INFO L93 Difference]: Finished difference Result 470 states and 677 transitions. [2020-08-22 22:07:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 22:07:57,995 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 193 [2020-08-22 22:07:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:58,000 INFO L225 Difference]: With dead ends: 470 [2020-08-22 22:07:58,000 INFO L226 Difference]: Without dead ends: 257 [2020-08-22 22:07:58,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-22 22:07:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-08-22 22:07:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 233. [2020-08-22 22:07:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 22:07:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 310 transitions. [2020-08-22 22:07:58,041 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 310 transitions. Word has length 193 [2020-08-22 22:07:58,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:58,042 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 310 transitions. [2020-08-22 22:07:58,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:07:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 310 transitions. [2020-08-22 22:07:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-08-22 22:07:58,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:58,048 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 18, 18, 17, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:58,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 22:07:58,049 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:58,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1293350858, now seen corresponding path program 4 times [2020-08-22 22:07:58,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:58,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195126137] [2020-08-22 22:07:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:07:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 22:07:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:07:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:58,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2292 backedges. 199 proven. 672 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2020-08-22 22:07:59,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195126137] [2020-08-22 22:07:59,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:07:59,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 22:07:59,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485706557] [2020-08-22 22:07:59,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:07:59,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:07:59,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:07:59,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:07:59,062 INFO L87 Difference]: Start difference. First operand 233 states and 310 transitions. Second operand 14 states. [2020-08-22 22:07:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:07:59,647 INFO L93 Difference]: Finished difference Result 534 states and 785 transitions. [2020-08-22 22:07:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 22:07:59,647 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 351 [2020-08-22 22:07:59,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:07:59,652 INFO L225 Difference]: With dead ends: 534 [2020-08-22 22:07:59,652 INFO L226 Difference]: Without dead ends: 301 [2020-08-22 22:07:59,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-08-22 22:07:59,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-08-22 22:07:59,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 265. [2020-08-22 22:07:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-22 22:07:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 352 transitions. [2020-08-22 22:07:59,695 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 352 transitions. Word has length 351 [2020-08-22 22:07:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:07:59,696 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 352 transitions. [2020-08-22 22:07:59,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:07:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 352 transitions. [2020-08-22 22:07:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-08-22 22:07:59,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:07:59,701 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:07:59,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 22:07:59,702 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:07:59,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:07:59,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2113087688, now seen corresponding path program 5 times [2020-08-22 22:07:59,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:07:59,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894390745] [2020-08-22 22:07:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:07:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:07:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:07:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:07:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:07:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:07:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:07:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:07:59,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:07:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 22:08:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1423 backedges. 261 proven. 446 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-08-22 22:08:00,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894390745] [2020-08-22 22:08:00,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:08:00,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 22:08:00,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975579007] [2020-08-22 22:08:00,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 22:08:00,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:08:00,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 22:08:00,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:08:00,381 INFO L87 Difference]: Start difference. First operand 265 states and 352 transitions. Second operand 16 states. [2020-08-22 22:08:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:08:01,120 INFO L93 Difference]: Finished difference Result 487 states and 692 transitions. [2020-08-22 22:08:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 22:08:01,121 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 281 [2020-08-22 22:08:01,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:08:01,125 INFO L225 Difference]: With dead ends: 487 [2020-08-22 22:08:01,125 INFO L226 Difference]: Without dead ends: 190 [2020-08-22 22:08:01,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 22:08:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-22 22:08:01,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 163. [2020-08-22 22:08:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-22 22:08:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 209 transitions. [2020-08-22 22:08:01,150 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 209 transitions. Word has length 281 [2020-08-22 22:08:01,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:08:01,151 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 209 transitions. [2020-08-22 22:08:01,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 22:08:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 209 transitions. [2020-08-22 22:08:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-08-22 22:08:01,155 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:08:01,155 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:08:01,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 22:08:01,156 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:08:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:08:01,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1117162661, now seen corresponding path program 6 times [2020-08-22 22:08:01,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:08:01,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927506616] [2020-08-22 22:08:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:08:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:08:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:08:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:01,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 22:08:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:02,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:02,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:02,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:02,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2020-08-22 22:08:02,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927506616] [2020-08-22 22:08:02,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:08:02,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 22:08:02,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498270939] [2020-08-22 22:08:02,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 22:08:02,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:08:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 22:08:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-08-22 22:08:02,332 INFO L87 Difference]: Start difference. First operand 163 states and 209 transitions. Second operand 28 states. [2020-08-22 22:08:03,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:08:03,264 INFO L93 Difference]: Finished difference Result 175 states and 223 transitions. [2020-08-22 22:08:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-22 22:08:03,265 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 228 [2020-08-22 22:08:03,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:08:03,267 INFO L225 Difference]: With dead ends: 175 [2020-08-22 22:08:03,267 INFO L226 Difference]: Without dead ends: 169 [2020-08-22 22:08:03,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=1843, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 22:08:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-22 22:08:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2020-08-22 22:08:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-22 22:08:03,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 208 transitions. [2020-08-22 22:08:03,300 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 208 transitions. Word has length 228 [2020-08-22 22:08:03,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:08:03,301 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 208 transitions. [2020-08-22 22:08:03,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 22:08:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 208 transitions. [2020-08-22 22:08:03,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-08-22 22:08:03,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:08:03,308 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 20, 20, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:08:03,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 22:08:03,309 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:08:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:08:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash -914287645, now seen corresponding path program 7 times [2020-08-22 22:08:03,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:08:03,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085937634] [2020-08-22 22:08:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:08:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:08:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:08:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 22:08:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 22:08:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:03,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2798 backedges. 244 proven. 500 refuted. 0 times theorem prover too weak. 2054 trivial. 0 not checked. [2020-08-22 22:08:04,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085937634] [2020-08-22 22:08:04,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:08:04,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:08:04,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794858352] [2020-08-22 22:08:04,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:08:04,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:08:04,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:08:04,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:08:04,125 INFO L87 Difference]: Start difference. First operand 163 states and 208 transitions. Second operand 11 states. [2020-08-22 22:08:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:08:04,378 INFO L93 Difference]: Finished difference Result 316 states and 416 transitions. [2020-08-22 22:08:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:08:04,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 386 [2020-08-22 22:08:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:08:04,381 INFO L225 Difference]: With dead ends: 316 [2020-08-22 22:08:04,381 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 22:08:04,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:08:04,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 22:08:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2020-08-22 22:08:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 22:08:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 201 transitions. [2020-08-22 22:08:04,408 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 201 transitions. Word has length 386 [2020-08-22 22:08:04,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:08:04,408 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 201 transitions. [2020-08-22 22:08:04,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:08:04,408 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 201 transitions. [2020-08-22 22:08:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-08-22 22:08:04,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:08:04,415 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 19, 19, 17, 16, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:08:04,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 22:08:04,416 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:08:04,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:08:04,416 INFO L82 PathProgramCache]: Analyzing trace with hash 120199642, now seen corresponding path program 8 times [2020-08-22 22:08:04,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:08:04,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19840771] [2020-08-22 22:08:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:08:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:08:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:08:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 22:08:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 22:08:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 335 proven. 783 refuted. 0 times theorem prover too weak. 1434 trivial. 0 not checked. [2020-08-22 22:08:05,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19840771] [2020-08-22 22:08:05,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:08:05,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 22:08:05,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519824946] [2020-08-22 22:08:05,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 22:08:05,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:08:05,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 22:08:05,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:08:05,405 INFO L87 Difference]: Start difference. First operand 159 states and 201 transitions. Second operand 17 states. [2020-08-22 22:08:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:08:06,122 INFO L93 Difference]: Finished difference Result 363 states and 511 transitions. [2020-08-22 22:08:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 22:08:06,123 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 369 [2020-08-22 22:08:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:08:06,127 INFO L225 Difference]: With dead ends: 363 [2020-08-22 22:08:06,128 INFO L226 Difference]: Without dead ends: 205 [2020-08-22 22:08:06,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 22:08:06,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-08-22 22:08:06,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 171. [2020-08-22 22:08:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-08-22 22:08:06,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 215 transitions. [2020-08-22 22:08:06,150 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 215 transitions. Word has length 369 [2020-08-22 22:08:06,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:08:06,151 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 215 transitions. [2020-08-22 22:08:06,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 22:08:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 215 transitions. [2020-08-22 22:08:06,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-08-22 22:08:06,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:08:06,157 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 15, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:08:06,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 22:08:06,157 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:08:06,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:08:06,158 INFO L82 PathProgramCache]: Analyzing trace with hash 689403166, now seen corresponding path program 9 times [2020-08-22 22:08:06,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:08:06,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500983138] [2020-08-22 22:08:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:08:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:08:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:08:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 22:08:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 22:08:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 268 proven. 558 refuted. 0 times theorem prover too weak. 1223 trivial. 0 not checked. [2020-08-22 22:08:06,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500983138] [2020-08-22 22:08:06,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:08:06,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 22:08:06,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792432979] [2020-08-22 22:08:06,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:08:06,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:08:06,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:08:06,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:08:06,770 INFO L87 Difference]: Start difference. First operand 171 states and 215 transitions. Second operand 14 states. [2020-08-22 22:08:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:08:07,236 INFO L93 Difference]: Finished difference Result 345 states and 448 transitions. [2020-08-22 22:08:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 22:08:07,237 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 334 [2020-08-22 22:08:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:08:07,240 INFO L225 Difference]: With dead ends: 345 [2020-08-22 22:08:07,241 INFO L226 Difference]: Without dead ends: 184 [2020-08-22 22:08:07,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-22 22:08:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-08-22 22:08:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 174. [2020-08-22 22:08:07,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-22 22:08:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 215 transitions. [2020-08-22 22:08:07,262 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 215 transitions. Word has length 334 [2020-08-22 22:08:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:08:07,262 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 215 transitions. [2020-08-22 22:08:07,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:08:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 215 transitions. [2020-08-22 22:08:07,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-08-22 22:08:07,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:08:07,268 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:08:07,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 22:08:07,268 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:08:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:08:07,269 INFO L82 PathProgramCache]: Analyzing trace with hash 549243331, now seen corresponding path program 10 times [2020-08-22 22:08:07,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:08:07,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7684238] [2020-08-22 22:08:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:08:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:08:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:08:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 22:08:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-22 22:08:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 22:08:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 22:08:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:08:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:08:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:07,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 22:08:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:08:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2534 backedges. 186 proven. 556 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2020-08-22 22:08:08,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7684238] [2020-08-22 22:08:08,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:08:08,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 22:08:08,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883160280] [2020-08-22 22:08:08,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 22:08:08,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:08:08,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 22:08:08,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:08:08,084 INFO L87 Difference]: Start difference. First operand 174 states and 215 transitions. Second operand 12 states. [2020-08-22 22:08:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:08:08,461 INFO L93 Difference]: Finished difference Result 201 states and 253 transitions. [2020-08-22 22:08:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 22:08:08,461 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 369 [2020-08-22 22:08:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:08:08,463 INFO L225 Difference]: With dead ends: 201 [2020-08-22 22:08:08,463 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 22:08:08,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:08:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 22:08:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 22:08:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 22:08:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 22:08:08,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 369 [2020-08-22 22:08:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:08:08,465 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 22:08:08,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 22:08:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 22:08:08,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 22:08:08,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 22:08:08,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 22:08:15,429 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 6 [2020-08-22 22:08:16,035 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 42 [2020-08-22 22:08:16,357 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 27 [2020-08-22 22:08:16,486 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 6 [2020-08-22 22:08:16,805 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 27 [2020-08-22 22:08:17,925 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 183 DAG size of output: 36 [2020-08-22 22:08:18,315 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 35 [2020-08-22 22:08:18,971 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 42 [2020-08-22 22:08:19,467 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 43 [2020-08-22 22:08:20,127 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 43 [2020-08-22 22:08:20,710 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 51 [2020-08-22 22:08:21,204 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 35 [2020-08-22 22:08:21,691 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 35 [2020-08-22 22:08:21,921 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 7 [2020-08-22 22:08:22,304 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 23 [2020-08-22 22:08:23,329 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 183 DAG size of output: 36 [2020-08-22 22:08:23,671 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 23 [2020-08-22 22:08:24,367 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 42 [2020-08-22 22:08:24,907 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 26 [2020-08-22 22:08:24,992 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:08:24,992 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:08:24,992 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:08:24,993 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 22:08:24,993 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 22:08:24,993 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:08:24,993 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) the Hoare annotation is: false [2020-08-22 22:08:24,993 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-08-22 22:08:24,993 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 35 42) the Hoare annotation is: (<= 6 main_~x~0) [2020-08-22 22:08:24,994 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 35 42) the Hoare annotation is: (<= 6 main_~x~0) [2020-08-22 22:08:24,994 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: false [2020-08-22 22:08:24,994 INFO L264 CegarLoopResult]: At program point L38(lines 38 40) the Hoare annotation is: (and (<= 6 main_~x~0) (<= main_~x~0 6) (<= 8 main_~result~0) (<= main_~result~0 8)) [2020-08-22 22:08:24,994 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 6 main_~x~0) (<= main_~x~0 6)) [2020-08-22 22:08:24,994 INFO L264 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: (and (<= 8 |main_#t~ret4|) (<= 6 main_~x~0) (<= |main_#t~ret4| 8) (<= main_~x~0 6)) [2020-08-22 22:08:24,995 INFO L264 CegarLoopResult]: At program point L38-2(lines 38 40) the Hoare annotation is: (<= 6 main_~x~0) [2020-08-22 22:08:24,995 INFO L264 CegarLoopResult]: At program point L37-2(line 37) the Hoare annotation is: (and (<= 8 |main_#t~ret4|) (<= 6 main_~x~0) (<= |main_#t~ret4| 8) (<= main_~x~0 6)) [2020-08-22 22:08:24,995 INFO L264 CegarLoopResult]: At program point L37-3(line 37) the Hoare annotation is: (and (<= 8 |main_#t~ret4|) (<= 6 main_~x~0) (<= |main_#t~ret4| 8) (<= main_~x~0 6) (<= 8 main_~result~0) (<= main_~result~0 8)) [2020-08-22 22:08:24,995 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-08-22 22:08:24,995 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= 2 |fibo2_#in~n|)) [2020-08-22 22:08:24,995 INFO L264 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= 3 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 3) .cse0 (<= 5 |fibo2_#in~n|)) (and (<= |fibo2_#t~ret2| 1) .cse0 (<= 1 |fibo2_#t~ret2|) (<= 2 |fibo2_#in~n|) (<= |fibo2_#in~n| 2)) (and .cse0 (<= 6 |fibo2_#in~n|)) (and (<= 4 |fibo2_#in~n|) (<= 2 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 2) .cse0 (<= fibo2_~n 4)))) [2020-08-22 22:08:24,996 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= 2 |fibo2_#in~n|)) (< 0 fibo2_~n)) [2020-08-22 22:08:24,996 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= 3 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 3) .cse0 (<= 5 |fibo2_#in~n|)) (and (<= |fibo2_#t~ret2| 1) .cse0 (<= 1 |fibo2_#t~ret2|) (<= 2 |fibo2_#in~n|) (<= |fibo2_#in~n| 2)) (and .cse0 (<= 6 |fibo2_#in~n|)) (and (<= 4 |fibo2_#in~n|) (<= 2 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 2) .cse0 (<= fibo2_~n 4)))) [2020-08-22 22:08:24,996 INFO L264 CegarLoopResult]: At program point L20(lines 20 24) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 0 fibo2_~n)) [2020-08-22 22:08:24,996 INFO L264 CegarLoopResult]: At program point L23-3(line 23) the Hoare annotation is: (let ((.cse5 (<= |fibo2_#in~n| 4)) (.cse6 (<= |fibo2_#t~ret2| 1)) (.cse1 (= fibo2_~n |fibo2_#in~n|)) (.cse7 (<= 1 |fibo2_#t~ret2|)) (.cse3 (+ |fibo2_#t~ret3| |fibo2_#t~ret2|))) (let ((.cse0 (and (<= |fibo2_#in~n| 3) (<= .cse3 2) (<= 3 fibo2_~n) .cse6 .cse1 .cse7 (<= 2 .cse3))) (.cse2 (and (<= 4 |fibo2_#in~n|) (<= .cse3 3) (<= 2 |fibo2_#t~ret2|) .cse5 (<= |fibo2_#t~ret2| 2) .cse1 (<= 3 .cse3))) (.cse4 (and (<= 1 .cse3) (<= .cse3 1) .cse6 .cse1 .cse7 (<= 2 |fibo2_#in~n|) (<= |fibo2_#in~n| 2)))) (and (or .cse0 (and .cse1 (<= 6 |fibo2_#in~n|)) .cse2 (and (<= 3 |fibo2_#t~ret2|) (<= .cse3 5) (<= |fibo2_#t~ret2| 3) (<= 5 .cse3) .cse1) .cse4) (or (not .cse5) .cse0 .cse2 .cse4)))) [2020-08-22 22:08:24,996 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 0)) [2020-08-22 22:08:24,996 INFO L264 CegarLoopResult]: At program point L23-4(line 23) the Hoare annotation is: (let ((.cse5 (<= |fibo2_#in~n| 4)) (.cse6 (<= |fibo2_#t~ret2| 1)) (.cse1 (= fibo2_~n |fibo2_#in~n|)) (.cse7 (<= 1 |fibo2_#t~ret2|)) (.cse3 (+ |fibo2_#t~ret3| |fibo2_#t~ret2|))) (let ((.cse0 (and (<= |fibo2_#in~n| 3) (<= .cse3 2) (<= 3 fibo2_~n) .cse6 .cse1 .cse7 (<= 2 .cse3))) (.cse2 (and (<= 4 |fibo2_#in~n|) (<= .cse3 3) (<= 2 |fibo2_#t~ret2|) .cse5 (<= |fibo2_#t~ret2| 2) .cse1 (<= 3 .cse3))) (.cse4 (and (<= 1 .cse3) (<= .cse3 1) .cse6 .cse1 .cse7 (<= 2 |fibo2_#in~n|) (<= |fibo2_#in~n| 2)))) (and (or .cse0 (and .cse1 (<= 6 |fibo2_#in~n|)) .cse2 (and (<= 3 |fibo2_#t~ret2|) (<= .cse3 5) (<= |fibo2_#t~ret2| 3) (<= 5 .cse3) .cse1) .cse4) (or (not .cse5) .cse0 .cse2 .cse4)))) [2020-08-22 22:08:24,996 INFO L264 CegarLoopResult]: At program point L18(lines 18 24) the Hoare annotation is: (= fibo2_~n |fibo2_#in~n|) [2020-08-22 22:08:24,997 INFO L264 CegarLoopResult]: At program point L23-5(line 23) the Hoare annotation is: (let ((.cse0 (+ |fibo2_#t~ret3| |fibo2_#t~ret2|)) (.cse1 (<= |fibo2_#t~ret2| 1)) (.cse4 (= fibo2_~n |fibo2_#in~n|)) (.cse2 (<= 1 |fibo2_#t~ret2|))) (let ((.cse3 (and (<= 1 .cse0) (<= .cse0 1) (<= 1 |fibo2_#res|) .cse1 (<= |fibo2_#res| 1) .cse4 .cse2 (<= 2 |fibo2_#in~n|) (<= |fibo2_#in~n| 2)))) (and (or (and (<= |fibo2_#in~n| 3) (<= .cse0 2) (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|) .cse1 .cse2 (<= 2 .cse0)) .cse3 (and (<= 3 |fibo2_#t~ret2|) (<= |fibo2_#res| 5) (<= .cse0 5) (<= |fibo2_#t~ret2| 3) (<= 5 .cse0) (<= 5 |fibo2_#in~n|) (<= 5 |fibo2_#res|)) (<= 6 |fibo2_#in~n|) (and (<= 4 |fibo2_#in~n|) (<= .cse0 3) (<= 2 |fibo2_#t~ret2|) (<= |fibo2_#in~n| 4) (<= 3 |fibo2_#res|) (<= |fibo2_#t~ret2| 2) (<= |fibo2_#res| 3) (<= 3 .cse0))) (or .cse3 (and (<= 3 fibo2_~n) .cse4))))) [2020-08-22 22:08:24,997 INFO L264 CegarLoopResult]: At program point L23-6(line 23) the Hoare annotation is: (let ((.cse0 (<= |fibo2_#in~n| 4)) (.cse1 (= fibo2_~n |fibo2_#in~n|))) (let ((.cse2 (and (<= 4 fibo2_~n) .cse0 (<= |fibo2_#res| 3) .cse1 (<= 3 |fibo2_#res|)))) (and (or (not .cse0) (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) .cse1 (<= 2 |fibo2_#in~n|) (<= |fibo2_#in~n| 2)) (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|) (<= 3 fibo2_~n) .cse1) .cse2) (or (not (<= 4 |fibo2_#in~n|)) (and (<= |fibo2_#res| 5) .cse1 (<= 5 |fibo2_#res|)) (and .cse1 (<= 6 |fibo2_#in~n|)) .cse2)))) [2020-08-22 22:08:24,997 INFO L264 CegarLoopResult]: At program point fibo2FINAL(lines 17 25) the Hoare annotation is: (let ((.cse0 (= fibo2_~n |fibo2_#in~n|)) (.cse1 (<= |fibo2_#in~n| 2))) (and (or (and .cse0 (<= |fibo2_#in~n| 0)) (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1)) (not .cse1)) (or (and .cse0 (< 0 fibo2_~n)) (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|))) (or (and (<= 4 fibo2_~n) (<= |fibo2_#in~n| 4) (<= |fibo2_#res| 3) (<= 3 |fibo2_#res|)) (and .cse0 (<= 6 |fibo2_#in~n|)) (and (<= |fibo2_#res| 5) (<= 5 |fibo2_#in~n|) (<= 5 |fibo2_#res|)) (and (<= |fibo2_#in~n| 3) (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|)) .cse1))) [2020-08-22 22:08:24,997 INFO L264 CegarLoopResult]: At program point fibo2EXIT(lines 17 25) the Hoare annotation is: (let ((.cse0 (= fibo2_~n |fibo2_#in~n|)) (.cse1 (<= |fibo2_#in~n| 2))) (and (or (and .cse0 (<= |fibo2_#in~n| 0)) (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1)) (not .cse1)) (or (and .cse0 (< 0 fibo2_~n)) (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|))) (or (and (<= 4 fibo2_~n) (<= |fibo2_#in~n| 4) (<= |fibo2_#res| 3) (<= 3 |fibo2_#res|)) (and .cse0 (<= 6 |fibo2_#in~n|)) (and (<= |fibo2_#res| 5) (<= 5 |fibo2_#in~n|) (<= 5 |fibo2_#res|)) (and (<= |fibo2_#in~n| 3) (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|)) .cse1))) [2020-08-22 22:08:24,997 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-08-22 22:08:24,997 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 2)) (= fibo1_~n |fibo1_#in~n|)) [2020-08-22 22:08:24,997 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= |fibo1_#in~n| 5) (<= 5 fibo1_~n) .cse0) (and (<= |fibo1_#in~n| 3) (<= |fibo1_#t~ret0| 1) (<= 1 |fibo1_#t~ret0|) .cse0 (<= 3 |fibo1_#in~n|)) (and (<= 5 |fibo1_#in~n|) (<= 5 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 5) .cse0) (and (<= 7 |fibo1_#in~n|) .cse0))) [2020-08-22 22:08:24,998 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= |fibo1_#in~n| 1) (= fibo1_~n |fibo1_#in~n|) (< 0 fibo1_~n)) [2020-08-22 22:08:24,998 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= |fibo1_#in~n| 5) (<= 5 fibo1_~n) .cse0) (and (<= |fibo1_#in~n| 3) (<= |fibo1_#t~ret0| 1) (<= 1 |fibo1_#t~ret0|) .cse0 (<= 3 |fibo1_#in~n|)) (and (<= 5 |fibo1_#in~n|) (<= 5 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 5) .cse0) (and (<= 7 |fibo1_#in~n|) .cse0))) [2020-08-22 22:08:24,998 INFO L264 CegarLoopResult]: At program point fibo1FINAL(lines 7 15) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (or (and (<= |fibo1_#in~n| 1) (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)) (<= |fibo1_#in~n| 0) (<= 7 |fibo1_#in~n|) (and (<= |fibo1_#in~n| 3) (<= 2 |fibo1_#res|) (<= |fibo1_#res| 2) (<= 3 |fibo1_#in~n|)) (and (<= 5 fibo1_~n) (or (<= |fibo1_#in~n| 5) (and (<= 8 |fibo1_#res|) (<= |fibo1_#res| 8))))) (or (and (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (< 0 fibo1_~n))) [2020-08-22 22:08:24,998 INFO L264 CegarLoopResult]: At program point L10(lines 10 14) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (< 0 fibo1_~n)) [2020-08-22 22:08:24,998 INFO L264 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (let ((.cse0 (+ |fibo1_#t~ret1| |fibo1_#t~ret0|))) (and (or (not (<= |fibo1_#in~n| 4)) (and (<= |fibo1_#in~n| 3) (<= |fibo1_#t~ret0| 1) (<= .cse0 2) (<= 1 |fibo1_#t~ret0|) (<= 2 .cse0))) (not (<= |fibo1_#in~n| 2)) (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 5 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 5) .cse1 (<= 8 .cse0) (<= .cse0 8)) (and (<= |fibo1_#in~n| 5) .cse1) (and (<= 7 |fibo1_#in~n|) .cse1))))) [2020-08-22 22:08:24,998 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (<= |fibo1_#in~n| 0) (= fibo1_~n |fibo1_#in~n|)) [2020-08-22 22:08:24,998 INFO L264 CegarLoopResult]: At program point L13-4(line 13) the Hoare annotation is: (let ((.cse0 (+ |fibo1_#t~ret1| |fibo1_#t~ret0|))) (and (or (not (<= |fibo1_#in~n| 4)) (and (<= |fibo1_#in~n| 3) (<= |fibo1_#t~ret0| 1) (<= .cse0 2) (<= 1 |fibo1_#t~ret0|) (<= 2 .cse0))) (not (<= |fibo1_#in~n| 2)) (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 5 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 5) .cse1 (<= 8 .cse0) (<= .cse0 8)) (and (<= |fibo1_#in~n| 5) .cse1) (and (<= 7 |fibo1_#in~n|) .cse1))))) [2020-08-22 22:08:24,998 INFO L264 CegarLoopResult]: At program point L8(lines 8 14) the Hoare annotation is: (= fibo1_~n |fibo1_#in~n|) [2020-08-22 22:08:24,999 INFO L264 CegarLoopResult]: At program point L13-5(line 13) the Hoare annotation is: (let ((.cse0 (<= |fibo1_#in~n| 3)) (.cse1 (+ |fibo1_#t~ret1| |fibo1_#t~ret0|))) (and (not (<= |fibo1_#in~n| 2)) (or .cse0 (not (<= |fibo1_#in~n| 4))) (or (and (<= 2 |fibo1_#res|) (<= |fibo1_#t~ret0| 1) (<= .cse1 2) (<= 1 |fibo1_#t~ret0|) (<= |fibo1_#res| 2) (<= 2 .cse1)) (not .cse0)) (let ((.cse2 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= |fibo1_#in~n| 5) .cse2) (and (<= 8 |fibo1_#res|) (<= |fibo1_#res| 8) (<= 5 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 5) .cse2 (<= 8 .cse1) (<= .cse1 8)) (and (<= 7 |fibo1_#in~n|) .cse2))))) [2020-08-22 22:08:24,999 INFO L264 CegarLoopResult]: At program point L13-6(line 13) the Hoare annotation is: (and (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 5 fibo1_~n) .cse0 (or (<= |fibo1_#in~n| 5) (and (<= 8 |fibo1_#res|) (<= |fibo1_#res| 8)))) (and (<= |fibo1_#in~n| 3) (<= 2 |fibo1_#res|) (<= |fibo1_#res| 2) .cse0) (and (<= 7 |fibo1_#in~n|) .cse0))) (not (<= |fibo1_#in~n| 2))) [2020-08-22 22:08:24,999 INFO L264 CegarLoopResult]: At program point fibo1EXIT(lines 7 15) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (or (and (<= |fibo1_#in~n| 1) (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)) (<= |fibo1_#in~n| 0) (<= 7 |fibo1_#in~n|) (and (<= |fibo1_#in~n| 3) (<= 2 |fibo1_#res|) (<= |fibo1_#res| 2) (<= 3 |fibo1_#in~n|)) (and (<= 5 fibo1_~n) (or (<= |fibo1_#in~n| 5) (and (<= 8 |fibo1_#res|) (<= |fibo1_#res| 8))))) (or (and (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (< 0 fibo1_~n))) [2020-08-22 22:08:25,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:08:25 BoogieIcfgContainer [2020-08-22 22:08:25,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:08:25,029 INFO L168 Benchmark]: Toolchain (without parser) took 34002.58 ms. Allocated memory was 147.3 MB in the beginning and 899.2 MB in the end (delta: 751.8 MB). Free memory was 104.2 MB in the beginning and 352.9 MB in the end (delta: -248.6 MB). Peak memory consumption was 767.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:08:25,029 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 22:08:25,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.23 ms. Allocated memory is still 147.3 MB. Free memory was 104.0 MB in the beginning and 94.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:08:25,031 INFO L168 Benchmark]: Boogie Preprocessor took 119.14 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 94.4 MB in the beginning and 183.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:08:25,031 INFO L168 Benchmark]: RCFGBuilder took 275.64 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 169.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-22 22:08:25,034 INFO L168 Benchmark]: TraceAbstraction took 33386.20 ms. Allocated memory was 204.5 MB in the beginning and 899.2 MB in the end (delta: 694.7 MB). Free memory was 168.4 MB in the beginning and 352.9 MB in the end (delta: -184.5 MB). Peak memory consumption was 774.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:08:25,038 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 217.23 ms. Allocated memory is still 147.3 MB. Free memory was 104.0 MB in the beginning and 94.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.14 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 94.4 MB in the beginning and 183.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.64 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 169.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33386.20 ms. Allocated memory was 204.5 MB in the beginning and 899.2 MB in the end (delta: 694.7 MB). Free memory was 168.4 MB in the beginning and 352.9 MB in the end (delta: -184.5 MB). Peak memory consumption was 774.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 35]: Procedure Contract for main Derived contract for procedure main: 6 <= x - ProcedureContractResult [Line: 17]: Procedure Contract for fibo2 Derived contract for procedure fibo2: ((((n == \old(n) && \old(n) <= 0) || (1 <= \result && \result <= 1)) || !(\old(n) <= 2)) && ((n == \old(n) && 0 < n) || (\result <= 0 && 0 <= \result))) && (((((((4 <= n && \old(n) <= 4) && \result <= 3) && 3 <= \result) || (n == \old(n) && 6 <= \old(n))) || ((\result <= 5 && 5 <= \old(n)) && 5 <= \result)) || ((\old(n) <= 3 && \result <= 2) && 2 <= \result)) || \old(n) <= 2) - ProcedureContractResult [Line: 7]: Procedure Contract for fibo1 Derived contract for procedure fibo1: (n == \old(n) && ((((((\old(n) <= 1 && \result <= 1) && 1 <= \result) || \old(n) <= 0) || 7 <= \old(n)) || (((\old(n) <= 3 && 2 <= \result) && \result <= 2) && 3 <= \old(n))) || (5 <= n && (\old(n) <= 5 || (8 <= \result && \result <= 8))))) && ((0 <= \result && \result <= 0) || 0 < n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.7s, OverallIterations: 21, TraceHistogramMax: 23, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 16.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1072 SDtfs, 1210 SDslu, 7563 SDs, 0 SdLazy, 5690 SolverSat, 504 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1192 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 252 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 4301 PreInvPairs, 10789 NumberOfFragments, 1516 HoareAnnotationTreeSize, 4301 FomulaSimplifications, 448447 FormulaSimplificationTreeSizeReduction, 6.7s HoareSimplificationTime, 45 FomulaSimplificationsInter, 110615 FormulaSimplificationTreeSizeReductionInter, 9.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 3411 NumberOfCodeBlocks, 3411 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 3390 ConstructedInterpolants, 0 QuantifiedInterpolants, 1510924 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 2 PerfectInterpolantSequences, 11851/16274 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...