/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:54:14,253 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-18 21:54:14,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:54:14,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:54:14,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:54:14,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:54:14,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:54:14,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:54:14,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:54:14,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:54:14,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:54:14,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:54:14,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:54:14,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:54:14,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:54:14,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:54:14,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:54:14,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:54:14,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:54:14,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 21:54:14,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:54:14,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:54:14,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:54:14,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:54:14,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:54:14,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:54:14,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:54:14,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:54:14,429 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:54:14,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:54:14,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:54:14,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:54:14,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:54:14,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:54:14,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:54:14,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:54:14,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:54:14,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:54:14,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:54:14,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:54:14,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:54:14,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:54:14,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:54:14,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:54:14,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:54:14,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:54:14,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:54:14,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:54:14,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:54:14,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:54:14,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:54:14,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:54:14,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:54:14,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:54:14,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:54:14,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:54:14,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:54:14,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:54:14,823 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:54:14,824 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-08-18 21:54:14,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d498c9f97/78fc776f6e724354b446837080a2d4c9/FLAG74293533a [2020-08-18 21:54:15,320 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:54:15,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-08-18 21:54:15,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d498c9f97/78fc776f6e724354b446837080a2d4c9/FLAG74293533a [2020-08-18 21:54:15,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d498c9f97/78fc776f6e724354b446837080a2d4c9 [2020-08-18 21:54:15,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:54:15,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:54:15,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:54:15,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:54:15,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:54:15,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:54:15" (1/1) ... [2020-08-18 21:54:15,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a5289c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15, skipping insertion in model container [2020-08-18 21:54:15,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:54:15" (1/1) ... [2020-08-18 21:54:15,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:54:15,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:54:15,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:54:15,933 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:54:15,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:54:15,970 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:54:15,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15 WrapperNode [2020-08-18 21:54:15,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:54:15,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:54:15,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:54:15,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:54:15,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15" (1/1) ... [2020-08-18 21:54:15,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15" (1/1) ... [2020-08-18 21:54:15,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15" (1/1) ... [2020-08-18 21:54:15,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15" (1/1) ... [2020-08-18 21:54:16,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15" (1/1) ... [2020-08-18 21:54:16,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15" (1/1) ... [2020-08-18 21:54:16,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15" (1/1) ... [2020-08-18 21:54:16,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:54:16,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:54:16,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:54:16,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:54:16,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 21:54:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:54:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:54:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-08-18 21:54:16,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:54:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:54:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:54:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-08-18 21:54:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:54:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:54:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:54:16,456 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:54:16,457 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 21:54:16,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:54:16 BoogieIcfgContainer [2020-08-18 21:54:16,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:54:16,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:54:16,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:54:16,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:54:16,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:54:15" (1/3) ... [2020-08-18 21:54:16,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118c3f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:54:16, skipping insertion in model container [2020-08-18 21:54:16,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:54:15" (2/3) ... [2020-08-18 21:54:16,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118c3f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:54:16, skipping insertion in model container [2020-08-18 21:54:16,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:54:16" (3/3) ... [2020-08-18 21:54:16,472 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-08-18 21:54:16,482 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:54:16,488 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:54:16,501 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:54:16,525 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:54:16,526 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:54:16,526 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:54:16,526 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:54:16,526 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:54:16,526 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:54:16,527 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:54:16,527 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:54:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-18 21:54:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 21:54:16,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:16,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:16,555 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:16,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:16,561 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-08-18 21:54:16,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:16,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586247338] [2020-08-18 21:54:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:16,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:16,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:54:16,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586247338] [2020-08-18 21:54:16,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:54:16,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:54:16,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135760082] [2020-08-18 21:54:16,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:54:16,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:16,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:54:16,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:54:16,827 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-18 21:54:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:16,935 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-08-18 21:54:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:54:16,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-18 21:54:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:16,960 INFO L225 Difference]: With dead ends: 35 [2020-08-18 21:54:16,960 INFO L226 Difference]: Without dead ends: 21 [2020-08-18 21:54:16,970 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 [2020-08-18 21:54:17,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-18 21:54:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-18 21:54:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-18 21:54:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-08-18 21:54:17,059 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-08-18 21:54:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:17,059 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-08-18 21:54:17,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:54:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-08-18 21:54:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 21:54:17,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:17,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:17,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:54:17,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:17,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:17,064 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-08-18 21:54:17,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:17,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910996685] [2020-08-18 21:54:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:54:17,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910996685] [2020-08-18 21:54:17,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:54:17,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:54:17,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527661014] [2020-08-18 21:54:17,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:54:17,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:17,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:54:17,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:54:17,139 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-08-18 21:54:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:17,204 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-08-18 21:54:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:54:17,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 21:54:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:17,207 INFO L225 Difference]: With dead ends: 27 [2020-08-18 21:54:17,207 INFO L226 Difference]: Without dead ends: 23 [2020-08-18 21:54:17,208 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 [2020-08-18 21:54:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-18 21:54:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-08-18 21:54:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-18 21:54:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-08-18 21:54:17,219 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-08-18 21:54:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:17,220 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-08-18 21:54:17,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:54:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-08-18 21:54:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 21:54:17,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:17,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:17,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:54:17,223 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-08-18 21:54:17,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:17,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966071167] [2020-08-18 21:54:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:54:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 21:54:17,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966071167] [2020-08-18 21:54:17,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:17,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 21:54:17,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816591367] [2020-08-18 21:54:17,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:54:17,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:17,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:54:17,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:54:17,378 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2020-08-18 21:54:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:17,539 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-18 21:54:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:54:17,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-18 21:54:17,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:17,543 INFO L225 Difference]: With dead ends: 38 [2020-08-18 21:54:17,544 INFO L226 Difference]: Without dead ends: 23 [2020-08-18 21:54:17,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:54:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-18 21:54:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-18 21:54:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-18 21:54:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-18 21:54:17,562 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-08-18 21:54:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:17,563 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-18 21:54:17,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:54:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-18 21:54:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 21:54:17,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:17,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:17,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:54:17,570 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:17,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:17,570 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2020-08-18 21:54:17,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:17,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336412087] [2020-08-18 21:54:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 21:54:17,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336412087] [2020-08-18 21:54:17,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:17,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 21:54:17,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610350886] [2020-08-18 21:54:17,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:54:17,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:17,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:54:17,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:54:17,701 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2020-08-18 21:54:17,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:17,811 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-08-18 21:54:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:54:17,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-08-18 21:54:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:17,815 INFO L225 Difference]: With dead ends: 41 [2020-08-18 21:54:17,815 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 21:54:17,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:54:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 21:54:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-18 21:54:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-18 21:54:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-08-18 21:54:17,829 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-08-18 21:54:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:17,829 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-08-18 21:54:17,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:54:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-08-18 21:54:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 21:54:17,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:17,832 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:17,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:54:17,833 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:17,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:17,833 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2020-08-18 21:54:17,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:17,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640569941] [2020-08-18 21:54:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:17,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 21:54:18,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640569941] [2020-08-18 21:54:18,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:18,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 21:54:18,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21054394] [2020-08-18 21:54:18,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:54:18,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:18,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:54:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:54:18,035 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 8 states. [2020-08-18 21:54:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:18,190 INFO L93 Difference]: Finished difference Result 79 states and 124 transitions. [2020-08-18 21:54:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:54:18,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-18 21:54:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:18,193 INFO L225 Difference]: With dead ends: 79 [2020-08-18 21:54:18,193 INFO L226 Difference]: Without dead ends: 48 [2020-08-18 21:54:18,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:54:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-18 21:54:18,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-08-18 21:54:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 21:54:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2020-08-18 21:54:18,208 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 40 [2020-08-18 21:54:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:18,208 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-08-18 21:54:18,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:54:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2020-08-18 21:54:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-18 21:54:18,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:18,211 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:18,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:54:18,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:18,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:18,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1111873851, now seen corresponding path program 3 times [2020-08-18 21:54:18,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:18,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346213255] [2020-08-18 21:54:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-18 21:54:18,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346213255] [2020-08-18 21:54:18,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:18,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 21:54:18,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457058309] [2020-08-18 21:54:18,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:54:18,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:18,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:54:18,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:54:18,433 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand 7 states. [2020-08-18 21:54:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:18,567 INFO L93 Difference]: Finished difference Result 65 states and 93 transitions. [2020-08-18 21:54:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:54:18,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-08-18 21:54:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:18,570 INFO L225 Difference]: With dead ends: 65 [2020-08-18 21:54:18,570 INFO L226 Difference]: Without dead ends: 61 [2020-08-18 21:54:18,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:54:18,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-18 21:54:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-08-18 21:54:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-18 21:54:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2020-08-18 21:54:18,587 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 41 [2020-08-18 21:54:18,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:18,588 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2020-08-18 21:54:18,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:54:18,588 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2020-08-18 21:54:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 21:54:18,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:18,592 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:18,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:54:18,593 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:18,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1986920854, now seen corresponding path program 4 times [2020-08-18 21:54:18,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:18,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946812426] [2020-08-18 21:54:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 77 proven. 104 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-08-18 21:54:18,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946812426] [2020-08-18 21:54:18,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:18,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 21:54:18,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315642601] [2020-08-18 21:54:18,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:54:18,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:18,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:54:18,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:54:18,871 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand 11 states. [2020-08-18 21:54:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:19,219 INFO L93 Difference]: Finished difference Result 107 states and 178 transitions. [2020-08-18 21:54:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 21:54:19,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-18 21:54:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:19,223 INFO L225 Difference]: With dead ends: 107 [2020-08-18 21:54:19,224 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 21:54:19,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:54:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 21:54:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-18 21:54:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-18 21:54:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-08-18 21:54:19,237 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 82 [2020-08-18 21:54:19,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:19,238 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-08-18 21:54:19,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:54:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-08-18 21:54:19,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 21:54:19,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:19,241 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:19,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:54:19,242 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:19,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:19,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1040445716, now seen corresponding path program 5 times [2020-08-18 21:54:19,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:19,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315417368] [2020-08-18 21:54:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 193 proven. 313 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2020-08-18 21:54:19,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315417368] [2020-08-18 21:54:19,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:19,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:54:19,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044773433] [2020-08-18 21:54:19,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:54:19,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:19,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:54:19,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:54:19,671 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 13 states. [2020-08-18 21:54:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:20,163 INFO L93 Difference]: Finished difference Result 115 states and 189 transitions. [2020-08-18 21:54:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 21:54:20,164 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-18 21:54:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:20,167 INFO L225 Difference]: With dead ends: 115 [2020-08-18 21:54:20,167 INFO L226 Difference]: Without dead ends: 74 [2020-08-18 21:54:20,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2020-08-18 21:54:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-18 21:54:20,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2020-08-18 21:54:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-18 21:54:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2020-08-18 21:54:20,181 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 136 [2020-08-18 21:54:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:20,181 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2020-08-18 21:54:20,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 21:54:20,182 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2020-08-18 21:54:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-18 21:54:20,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:20,185 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:20,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:54:20,185 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:20,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:20,186 INFO L82 PathProgramCache]: Analyzing trace with hash 259499213, now seen corresponding path program 6 times [2020-08-18 21:54:20,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:20,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657368601] [2020-08-18 21:54:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:54:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2020-08-18 21:54:20,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657368601] [2020-08-18 21:54:20,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:20,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:54:20,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122926460] [2020-08-18 21:54:20,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:54:20,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:20,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:54:20,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:54:20,694 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand 10 states. [2020-08-18 21:54:20,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:20,955 INFO L93 Difference]: Finished difference Result 186 states and 273 transitions. [2020-08-18 21:54:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 21:54:20,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 177 [2020-08-18 21:54:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:20,964 INFO L225 Difference]: With dead ends: 186 [2020-08-18 21:54:20,964 INFO L226 Difference]: Without dead ends: 182 [2020-08-18 21:54:20,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:54:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-18 21:54:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2020-08-18 21:54:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-08-18 21:54:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 250 transitions. [2020-08-18 21:54:21,001 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 250 transitions. Word has length 177 [2020-08-18 21:54:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:21,001 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 250 transitions. [2020-08-18 21:54:21,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:54:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 250 transitions. [2020-08-18 21:54:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-18 21:54:21,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:21,007 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:21,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:54:21,008 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:21,008 INFO L82 PathProgramCache]: Analyzing trace with hash -530192014, now seen corresponding path program 7 times [2020-08-18 21:54:21,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:21,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675007206] [2020-08-18 21:54:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:54:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 21:54:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:54:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:21,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1358 proven. 1342 refuted. 0 times theorem prover too weak. 3339 trivial. 0 not checked. [2020-08-18 21:54:22,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675007206] [2020-08-18 21:54:22,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:22,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 21:54:22,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581136173] [2020-08-18 21:54:22,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 21:54:22,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 21:54:22,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:54:22,142 INFO L87 Difference]: Start difference. First operand 170 states and 250 transitions. Second operand 17 states. [2020-08-18 21:54:23,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:23,007 INFO L93 Difference]: Finished difference Result 281 states and 495 transitions. [2020-08-18 21:54:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-18 21:54:23,007 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 327 [2020-08-18 21:54:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:23,014 INFO L225 Difference]: With dead ends: 281 [2020-08-18 21:54:23,014 INFO L226 Difference]: Without dead ends: 125 [2020-08-18 21:54:23,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 21:54:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-08-18 21:54:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 101. [2020-08-18 21:54:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-18 21:54:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2020-08-18 21:54:23,053 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 327 [2020-08-18 21:54:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:23,054 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2020-08-18 21:54:23,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 21:54:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2020-08-18 21:54:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-18 21:54:23,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:23,061 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:23,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:54:23,062 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:23,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1425621089, now seen corresponding path program 8 times [2020-08-18 21:54:23,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:23,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516524764] [2020-08-18 21:54:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:23,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:54:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 21:54:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2020-08-18 21:54:24,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516524764] [2020-08-18 21:54:24,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:24,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 21:54:24,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633063095] [2020-08-18 21:54:24,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 21:54:24,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:24,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 21:54:24,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-08-18 21:54:24,623 INFO L87 Difference]: Start difference. First operand 101 states and 141 transitions. Second operand 22 states. [2020-08-18 21:54:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:25,082 INFO L93 Difference]: Finished difference Result 114 states and 166 transitions. [2020-08-18 21:54:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 21:54:25,082 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 286 [2020-08-18 21:54:25,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:25,084 INFO L225 Difference]: With dead ends: 114 [2020-08-18 21:54:25,084 INFO L226 Difference]: Without dead ends: 110 [2020-08-18 21:54:25,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-08-18 21:54:25,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-18 21:54:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-08-18 21:54:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 21:54:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-08-18 21:54:25,101 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 286 [2020-08-18 21:54:25,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:25,102 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-08-18 21:54:25,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 21:54:25,102 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-08-18 21:54:25,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-08-18 21:54:25,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:25,107 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:25,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:54:25,108 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:25,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:25,108 INFO L82 PathProgramCache]: Analyzing trace with hash -617256294, now seen corresponding path program 9 times [2020-08-18 21:54:25,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:25,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351063085] [2020-08-18 21:54:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:54:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 21:54:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 21:54:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 863 proven. 1526 refuted. 0 times theorem prover too weak. 4731 trivial. 0 not checked. [2020-08-18 21:54:26,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351063085] [2020-08-18 21:54:26,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:26,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:54:26,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953865921] [2020-08-18 21:54:26,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:54:26,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:26,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:54:26,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:54:26,049 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 15 states. [2020-08-18 21:54:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:26,466 INFO L93 Difference]: Finished difference Result 213 states and 325 transitions. [2020-08-18 21:54:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 21:54:26,467 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 354 [2020-08-18 21:54:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:26,470 INFO L225 Difference]: With dead ends: 213 [2020-08-18 21:54:26,470 INFO L226 Difference]: Without dead ends: 118 [2020-08-18 21:54:26,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2020-08-18 21:54:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-08-18 21:54:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 97. [2020-08-18 21:54:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-08-18 21:54:26,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-08-18 21:54:26,486 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 354 [2020-08-18 21:54:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:26,488 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-08-18 21:54:26,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:54:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-08-18 21:54:26,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-08-18 21:54:26,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:54:26,497 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 46, 28, 28, 28, 28, 28, 28, 28, 18, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:54:26,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 21:54:26,497 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:54:26,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:54:26,498 INFO L82 PathProgramCache]: Analyzing trace with hash 161946605, now seen corresponding path program 10 times [2020-08-18 21:54:26,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:54:26,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999935670] [2020-08-18 21:54:26,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:54:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:54:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:26,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:54:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:26,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:54:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 21:54:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-18 21:54:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:54:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:54:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 21:54:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:54:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:27,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:54:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:54:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1406 proven. 1622 refuted. 0 times theorem prover too weak. 5903 trivial. 0 not checked. [2020-08-18 21:54:28,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999935670] [2020-08-18 21:54:28,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:54:28,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 21:54:28,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866575777] [2020-08-18 21:54:28,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 21:54:28,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:54:28,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 21:54:28,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:54:28,016 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand 17 states. [2020-08-18 21:54:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:54:28,623 INFO L93 Difference]: Finished difference Result 194 states and 289 transitions. [2020-08-18 21:54:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 21:54:28,624 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 395 [2020-08-18 21:54:28,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:54:28,625 INFO L225 Difference]: With dead ends: 194 [2020-08-18 21:54:28,625 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:54:28,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2020-08-18 21:54:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:54:28,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:54:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:54:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:54:28,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 395 [2020-08-18 21:54:28,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:54:28,629 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:54:28,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 21:54:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:54:28,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:54:28,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 21:54:28,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:54:29,139 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2020-08-18 21:54:29,217 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 21:54:29,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:54:29,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:54:29,218 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 21:54:29,218 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 21:54:29,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:54:29,218 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-08-18 21:54:29,218 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2020-08-18 21:54:29,218 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-18 21:54:29,219 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-18 21:54:29,219 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 7 main_~x~0) (<= main_~x~0 7)) [2020-08-18 21:54:29,219 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2020-08-18 21:54:29,219 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-08-18 21:54:29,219 INFO L268 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-08-18 21:54:29,219 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2020-08-18 21:54:29,219 INFO L268 CegarLoopResult]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2020-08-18 21:54:29,220 INFO L268 CegarLoopResult]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2020-08-18 21:54:29,220 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= 2 |fibo_#in~n|) (= fibo_~n |fibo_#in~n|)) [2020-08-18 21:54:29,220 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-08-18 21:54:29,220 INFO L264 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse1 (<= 1 |fibo_#t~ret0|)) (.cse2 (<= |fibo_#t~ret0| 1)) (.cse0 (= fibo_~n |fibo_#in~n|))) (or (and (<= 3 |fibo_#t~ret0|) (<= 5 |fibo_#in~n|) (<= |fibo_#t~ret0| 3) .cse0 (<= |fibo_#in~n| 5)) (and (<= 8 |fibo_#t~ret0|) .cse0 (<= 7 |fibo_#in~n|) (<= |fibo_#t~ret0| 8)) (and (<= 5 |fibo_#t~ret0|) (<= |fibo_#in~n| 6) .cse0 (<= |fibo_#t~ret0| 5) (<= 6 |fibo_#in~n|)) (and .cse1 (<= 2 |fibo_#in~n|) .cse2 (<= |fibo_#in~n| 2) .cse0) (and (<= 8 fibo_~n) .cse0) (and (<= |fibo_#in~n| 4) (<= 2 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 2) .cse0 (<= 4 |fibo_#in~n|)) (and .cse1 .cse2 .cse0 (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3)))) [2020-08-18 21:54:29,220 INFO L268 CegarLoopResult]: For program point L8(lines 8 12) no Hoare annotation was computed. [2020-08-18 21:54:29,220 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-08-18 21:54:29,221 INFO L268 CegarLoopResult]: For program point L6(lines 6 12) no Hoare annotation was computed. [2020-08-18 21:54:29,221 INFO L271 CegarLoopResult]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2020-08-18 21:54:29,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:54:29 BoogieIcfgContainer [2020-08-18 21:54:29,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:54:29,229 INFO L168 Benchmark]: Toolchain (without parser) took 13514.42 ms. Allocated memory was 137.4 MB in the beginning and 540.5 MB in the end (delta: 403.2 MB). Free memory was 101.1 MB in the beginning and 152.7 MB in the end (delta: -51.6 MB). Peak memory consumption was 351.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:54:29,229 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:54:29,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.49 ms. Allocated memory is still 137.4 MB. Free memory was 100.7 MB in the beginning and 91.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:54:29,231 INFO L168 Benchmark]: Boogie Preprocessor took 33.70 ms. Allocated memory is still 137.4 MB. Free memory was 91.6 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:54:29,231 INFO L168 Benchmark]: RCFGBuilder took 454.48 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 90.0 MB in the beginning and 170.7 MB in the end (delta: -80.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:54:29,232 INFO L168 Benchmark]: TraceAbstraction took 12764.36 ms. Allocated memory was 203.4 MB in the beginning and 540.5 MB in the end (delta: 337.1 MB). Free memory was 170.0 MB in the beginning and 152.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 354.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:54:29,235 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.49 ms. Allocated memory is still 137.4 MB. Free memory was 100.7 MB in the beginning and 91.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.70 ms. Allocated memory is still 137.4 MB. Free memory was 91.6 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.48 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 90.0 MB in the beginning and 170.7 MB in the end (delta: -80.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12764.36 ms. Allocated memory was 203.4 MB in the beginning and 540.5 MB in the end (delta: 337.1 MB). Free memory was 170.0 MB in the beginning and 152.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 354.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.1s, OverallIterations: 13, TraceHistogramMax: 57, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 340 SDtfs, 600 SDslu, 1637 SDs, 0 SdLazy, 2399 SolverSat, 600 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 881 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 76 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 323 PreInvPairs, 389 NumberOfFragments, 120 HoareAnnotationTreeSize, 323 FomulaSimplifications, 227 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2180 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 1918 NumberOfCodeBlocks, 1918 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1905 ConstructedInterpolants, 0 QuantifiedInterpolants, 1027711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 22683/29663 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...