/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:47:13,285 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 02:47:13,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:47:13,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:47:13,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:47:13,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:47:13,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:47:13,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:47:13,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:47:13,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:47:13,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:47:13,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:47:13,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:47:13,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:47:13,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:47:13,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:47:13,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:47:13,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:47:13,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:47:13,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:47:13,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:47:13,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:47:13,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:47:13,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:47:13,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:47:13,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:47:13,352 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 [2020-08-19 02:47:13,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:47:13,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:47:13,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:47:13,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:47:13,376 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:47:13,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:47:13,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:47:13,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:47:13,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:47:13,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:47:13,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:47:13,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:47:13,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:47:13,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:47:13,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:47:13,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:47:13,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:47:13,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:47:13,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:47:13,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:47:13,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:47:13,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:47:13,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:47:13,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:47:13,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:47:13,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:47:13,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:47:13,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:47:13,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:47:13,381 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:47:13,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:47:13,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:47:13,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:47:13,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:47:13,710 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:47:13,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-19 02:47:13,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d3bfdfc/e756b6a029d84370ac3262a45c1f3aef/FLAGec7aadeca [2020-08-19 02:47:14,203 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:47:14,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-19 02:47:14,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d3bfdfc/e756b6a029d84370ac3262a45c1f3aef/FLAGec7aadeca [2020-08-19 02:47:14,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d3bfdfc/e756b6a029d84370ac3262a45c1f3aef [2020-08-19 02:47:14,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:47:14,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:47:14,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:47:14,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:47:14,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:47:14,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:47:14" (1/1) ... [2020-08-19 02:47:14,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1aa6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14, skipping insertion in model container [2020-08-19 02:47:14,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:47:14" (1/1) ... [2020-08-19 02:47:14,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:47:14,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:47:14,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:47:14,892 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:47:14,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:47:14,938 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:47:14,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14 WrapperNode [2020-08-19 02:47:14,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:47:14,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:47:14,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:47:14,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:47:15,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14" (1/1) ... [2020-08-19 02:47:15,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14" (1/1) ... [2020-08-19 02:47:15,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14" (1/1) ... [2020-08-19 02:47:15,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14" (1/1) ... [2020-08-19 02:47:15,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14" (1/1) ... [2020-08-19 02:47:15,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14" (1/1) ... [2020-08-19 02:47:15,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14" (1/1) ... [2020-08-19 02:47:15,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:47:15,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:47:15,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:47:15,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:47:15,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14" (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 [2020-08-19 02:47:15,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:47:15,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:47:15,163 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-19 02:47:15,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:47:15,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:47:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:47:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 02:47:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:47:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:47:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:47:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:47:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:47:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:47:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:47:15,442 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:47:15,443 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:47:15,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:47:15 BoogieIcfgContainer [2020-08-19 02:47:15,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:47:15,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:47:15,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:47:15,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:47:15,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:47:14" (1/3) ... [2020-08-19 02:47:15,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1ac53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:47:15, skipping insertion in model container [2020-08-19 02:47:15,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:47:14" (2/3) ... [2020-08-19 02:47:15,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1ac53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:47:15, skipping insertion in model container [2020-08-19 02:47:15,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:47:15" (3/3) ... [2020-08-19 02:47:15,472 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-08-19 02:47:15,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:47:15,490 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:47:15,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:47:15,525 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:47:15,525 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:47:15,525 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:47:15,525 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:47:15,525 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:47:15,525 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:47:15,526 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:47:15,526 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:47:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-19 02:47:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 02:47:15,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:15,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:15,549 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:15,554 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2020-08-19 02:47:15,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:15,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204975770] [2020-08-19 02:47:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:15,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:47:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:15,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204975770] [2020-08-19 02:47:15,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:47:15,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:47:15,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841146101] [2020-08-19 02:47:15,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:47:15,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:15,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:47:15,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:47:15,785 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-19 02:47:15,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:15,869 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-08-19 02:47:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:47:15,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 02:47:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:15,882 INFO L225 Difference]: With dead ends: 35 [2020-08-19 02:47:15,882 INFO L226 Difference]: Without dead ends: 17 [2020-08-19 02:47:15,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:47:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-08-19 02:47:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-08-19 02:47:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-19 02:47:15,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-19 02:47:15,915 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-08-19 02:47:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:15,916 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-19 02:47:15,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:47:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-19 02:47:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:47:15,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:15,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:15,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:47:15,918 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:15,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2020-08-19 02:47:15,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:15,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002922636] [2020-08-19 02:47:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:47:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:16,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002922636] [2020-08-19 02:47:16,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:47:16,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:47:16,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209715719] [2020-08-19 02:47:16,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:47:16,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:16,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:47:16,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:47:16,138 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-08-19 02:47:16,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:16,228 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-08-19 02:47:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:47:16,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-19 02:47:16,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:16,230 INFO L225 Difference]: With dead ends: 27 [2020-08-19 02:47:16,230 INFO L226 Difference]: Without dead ends: 19 [2020-08-19 02:47:16,232 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 [2020-08-19 02:47:16,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-19 02:47:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-19 02:47:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 02:47:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-19 02:47:16,238 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-08-19 02:47:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:16,239 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-19 02:47:16,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:47:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-19 02:47:16,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:47:16,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:16,240 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:16,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:47:16,241 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:16,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2020-08-19 02:47:16,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:16,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522077955] [2020-08-19 02:47:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:47:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:16,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522077955] [2020-08-19 02:47:16,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:16,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 02:47:16,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210988181] [2020-08-19 02:47:16,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:47:16,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:16,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:47:16,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:47:16,402 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-08-19 02:47:16,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:16,514 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-08-19 02:47:16,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:47:16,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-19 02:47:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:16,516 INFO L225 Difference]: With dead ends: 29 [2020-08-19 02:47:16,516 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 02:47:16,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:47:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 02:47:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-19 02:47:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 02:47:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-08-19 02:47:16,523 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-08-19 02:47:16,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:16,524 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-08-19 02:47:16,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:47:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-08-19 02:47:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 02:47:16,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:16,526 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:16,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:47:16,526 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:16,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:16,527 INFO L82 PathProgramCache]: Analyzing trace with hash -488804505, now seen corresponding path program 2 times [2020-08-19 02:47:16,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:16,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601543981] [2020-08-19 02:47:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:47:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:16,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601543981] [2020-08-19 02:47:16,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:16,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 02:47:16,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249129647] [2020-08-19 02:47:16,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:47:16,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:16,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:47:16,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:47:16,664 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-08-19 02:47:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:16,781 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-08-19 02:47:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:47:16,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-08-19 02:47:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:16,782 INFO L225 Difference]: With dead ends: 31 [2020-08-19 02:47:16,783 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 02:47:16,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:47:16,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 02:47:16,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-19 02:47:16,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-19 02:47:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-08-19 02:47:16,789 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-08-19 02:47:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:16,790 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-08-19 02:47:16,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:47:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-08-19 02:47:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 02:47:16,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:16,791 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:16,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:47:16,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:16,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1647043486, now seen corresponding path program 3 times [2020-08-19 02:47:16,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:16,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365407207] [2020-08-19 02:47:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:47:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:16,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365407207] [2020-08-19 02:47:16,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:16,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:47:16,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285933174] [2020-08-19 02:47:16,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:47:16,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:16,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:47:16,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:47:16,911 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-08-19 02:47:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:17,031 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-08-19 02:47:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:47:17,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-08-19 02:47:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:17,033 INFO L225 Difference]: With dead ends: 33 [2020-08-19 02:47:17,033 INFO L226 Difference]: Without dead ends: 25 [2020-08-19 02:47:17,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:47:17,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-19 02:47:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-19 02:47:17,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 02:47:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-08-19 02:47:17,040 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-08-19 02:47:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:17,040 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-08-19 02:47:17,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:47:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-08-19 02:47:17,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 02:47:17,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:17,042 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:17,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:47:17,042 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:17,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:17,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1976792733, now seen corresponding path program 4 times [2020-08-19 02:47:17,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:17,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371910114] [2020-08-19 02:47:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:17,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 02:47:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:17,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371910114] [2020-08-19 02:47:17,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:17,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:47:17,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258904993] [2020-08-19 02:47:17,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:47:17,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:17,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:47:17,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:47:17,164 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2020-08-19 02:47:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:17,286 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-08-19 02:47:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:47:17,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-08-19 02:47:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:17,287 INFO L225 Difference]: With dead ends: 35 [2020-08-19 02:47:17,287 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 02:47:17,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:47:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 02:47:17,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-19 02:47:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-19 02:47:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-19 02:47:17,294 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-08-19 02:47:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:17,294 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-19 02:47:17,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:47:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-19 02:47:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 02:47:17,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:17,296 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:17,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:47:17,296 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:17,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1264922136, now seen corresponding path program 5 times [2020-08-19 02:47:17,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:17,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535314835] [2020-08-19 02:47:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:17,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:17,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:47:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:17,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535314835] [2020-08-19 02:47:17,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:17,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:47:17,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846383636] [2020-08-19 02:47:17,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:47:17,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:17,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:47:17,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:47:17,417 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-08-19 02:47:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:17,576 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-08-19 02:47:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:47:17,577 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-08-19 02:47:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:17,578 INFO L225 Difference]: With dead ends: 37 [2020-08-19 02:47:17,578 INFO L226 Difference]: Without dead ends: 29 [2020-08-19 02:47:17,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:47:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-19 02:47:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-19 02:47:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-19 02:47:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-08-19 02:47:17,585 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-08-19 02:47:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:17,586 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-08-19 02:47:17,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:47:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-08-19 02:47:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 02:47:17,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:17,587 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:17,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:47:17,588 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:17,588 INFO L82 PathProgramCache]: Analyzing trace with hash 57078483, now seen corresponding path program 6 times [2020-08-19 02:47:17,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:17,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518583884] [2020-08-19 02:47:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:47:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:17,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518583884] [2020-08-19 02:47:17,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:17,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 02:47:17,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092869607] [2020-08-19 02:47:17,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:47:17,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:17,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:47:17,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:47:17,731 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2020-08-19 02:47:17,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:17,919 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-19 02:47:17,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 02:47:17,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-08-19 02:47:17,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:17,920 INFO L225 Difference]: With dead ends: 39 [2020-08-19 02:47:17,920 INFO L226 Difference]: Without dead ends: 31 [2020-08-19 02:47:17,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:47:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-19 02:47:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-19 02:47:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-19 02:47:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-08-19 02:47:17,930 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-08-19 02:47:17,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:17,931 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-08-19 02:47:17,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:47:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-08-19 02:47:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 02:47:17,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:17,936 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:17,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:47:17,936 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1039502130, now seen corresponding path program 7 times [2020-08-19 02:47:17,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:17,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250326785] [2020-08-19 02:47:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 02:47:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:18,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250326785] [2020-08-19 02:47:18,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:18,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:47:18,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407919792] [2020-08-19 02:47:18,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:47:18,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:18,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:47:18,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:47:18,128 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 12 states. [2020-08-19 02:47:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:18,363 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-08-19 02:47:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 02:47:18,364 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-08-19 02:47:18,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:18,365 INFO L225 Difference]: With dead ends: 41 [2020-08-19 02:47:18,365 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 02:47:18,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:47:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 02:47:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-19 02:47:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 02:47:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-08-19 02:47:18,372 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-08-19 02:47:18,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:18,372 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-08-19 02:47:18,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:47:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-08-19 02:47:18,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-19 02:47:18,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:18,374 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:18,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:47:18,374 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:18,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:18,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1708483593, now seen corresponding path program 8 times [2020-08-19 02:47:18,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:18,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586921215] [2020-08-19 02:47:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:18,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 02:47:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:18,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586921215] [2020-08-19 02:47:18,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:18,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:47:18,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904166017] [2020-08-19 02:47:18,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:47:18,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:18,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:47:18,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:47:18,546 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 13 states. [2020-08-19 02:47:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:18,761 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-08-19 02:47:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:47:18,762 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-08-19 02:47:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:18,762 INFO L225 Difference]: With dead ends: 43 [2020-08-19 02:47:18,763 INFO L226 Difference]: Without dead ends: 35 [2020-08-19 02:47:18,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:47:18,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-19 02:47:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-19 02:47:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-19 02:47:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-08-19 02:47:18,772 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2020-08-19 02:47:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:18,773 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-08-19 02:47:18,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:47:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-08-19 02:47:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 02:47:18,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:18,774 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:18,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:47:18,774 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:18,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:18,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1117876356, now seen corresponding path program 9 times [2020-08-19 02:47:18,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:18,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047149515] [2020-08-19 02:47:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 02:47:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:18,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047149515] [2020-08-19 02:47:18,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:18,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 02:47:18,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444627143] [2020-08-19 02:47:18,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 02:47:18,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 02:47:18,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:47:18,974 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 15 states. [2020-08-19 02:47:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:19,214 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-08-19 02:47:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 02:47:19,220 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-08-19 02:47:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:19,221 INFO L225 Difference]: With dead ends: 45 [2020-08-19 02:47:19,221 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 02:47:19,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-08-19 02:47:19,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 02:47:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-19 02:47:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-19 02:47:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-08-19 02:47:19,227 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2020-08-19 02:47:19,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:19,227 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-08-19 02:47:19,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 02:47:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-08-19 02:47:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 02:47:19,228 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:19,228 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:19,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:47:19,228 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:19,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:19,229 INFO L82 PathProgramCache]: Analyzing trace with hash 480004671, now seen corresponding path program 10 times [2020-08-19 02:47:19,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:19,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175300277] [2020-08-19 02:47:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:19,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:19,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:47:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:19,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175300277] [2020-08-19 02:47:19,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:19,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-19 02:47:19,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53256450] [2020-08-19 02:47:19,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-19 02:47:19,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:19,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-19 02:47:19,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-08-19 02:47:19,916 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 21 states. [2020-08-19 02:47:20,259 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2020-08-19 02:47:20,596 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-08-19 02:47:20,847 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-08-19 02:47:21,193 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2020-08-19 02:47:21,455 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-08-19 02:47:21,749 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2020-08-19 02:47:21,971 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-08-19 02:47:22,245 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-08-19 02:47:22,440 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-08-19 02:47:22,691 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-08-19 02:47:22,851 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-08-19 02:47:23,106 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-08-19 02:47:23,439 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-08-19 02:47:23,764 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-08-19 02:47:24,017 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-08-19 02:47:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:24,502 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-08-19 02:47:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 02:47:24,503 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-08-19 02:47:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:24,505 INFO L225 Difference]: With dead ends: 44 [2020-08-19 02:47:24,505 INFO L226 Difference]: Without dead ends: 39 [2020-08-19 02:47:24,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=457, Invalid=1523, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 02:47:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-19 02:47:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-19 02:47:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-19 02:47:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-08-19 02:47:24,519 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2020-08-19 02:47:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:24,520 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-08-19 02:47:24,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-19 02:47:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-08-19 02:47:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-19 02:47:24,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:24,521 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:47:24,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:47:24,522 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:24,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:24,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1665638714, now seen corresponding path program 11 times [2020-08-19 02:47:24,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:24,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389631998] [2020-08-19 02:47:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:24,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:24,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 02:47:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 112 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:47:24,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389631998] [2020-08-19 02:47:24,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:47:24,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:47:24,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712403147] [2020-08-19 02:47:24,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:47:24,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:47:24,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:47:24,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:47:24,715 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 16 states. [2020-08-19 02:47:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:24,831 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-19 02:47:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:47:24,832 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-08-19 02:47:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:24,832 INFO L225 Difference]: With dead ends: 39 [2020-08-19 02:47:24,833 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:47:24,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-08-19 02:47:24,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:47:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:47:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:47:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:47:24,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-08-19 02:47:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:24,834 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:47:24,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:47:24,835 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:47:24,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:47:24,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 02:47:24,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:47:25,577 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2020-08-19 02:47:25,598 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:47:25,598 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-19 02:47:25,598 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:47:25,598 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:47:25,599 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 02:47:25,599 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 02:47:25,599 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:47:25,599 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-08-19 02:47:25,599 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-08-19 02:47:25,599 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-08-19 02:47:25,599 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-08-19 02:47:25,599 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-08-19 02:47:25,599 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-08-19 02:47:25,600 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-08-19 02:47:25,600 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-08-19 02:47:25,600 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-19 02:47:25,601 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-08-19 02:47:25,602 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (let ((.cse0 (= |main_~#ad1~0.offset| 0)) (.cse3 (select |#memory_int| |main_~#ad1~0.base|)) (.cse4 (* main_~i~0 8)) (.cse2 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (or (let ((.cse1 (+ main_~i~0 7))) (and .cse0 (<= .cse1 .cse2) (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 56)) .cse1) (<= .cse2 .cse1))) (let ((.cse5 (+ main_~i~0 4))) (and .cse0 (= .cse5 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 32))) (<= .cse5 .cse2) (<= .cse2 .cse5))) (and .cse0 (<= .cse2 main_~i~0) (= main_~i~0 (select .cse3 (+ .cse4 |main_~#ad1~0.offset|)))) (let ((.cse6 (+ main_~i~0 10))) (and (= .cse6 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 80)) .cse6))) (let ((.cse7 (+ main_~i~0 3))) (and (= .cse7 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 24))) .cse0 (<= .cse2 .cse7) (<= .cse7 .cse2))) (let ((.cse8 (+ main_~i~0 8))) (and .cse0 (<= .cse8 .cse2) (= .cse8 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 64))) (<= .cse2 .cse8))) (let ((.cse9 (+ main_~i~0 1))) (and (<= .cse9 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 8)) .cse9) (<= .cse2 .cse9))) (let ((.cse10 (+ main_~i~0 5))) (and (<= .cse2 .cse10) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 40)) .cse10) (<= .cse10 .cse2))) (let ((.cse11 (+ main_~i~0 9))) (and (<= .cse11 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 72)) .cse11) (<= .cse2 .cse11))) (let ((.cse12 (+ main_~i~0 2))) (and .cse0 (<= .cse12 .cse2) (= .cse12 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 16))) (<= .cse2 .cse12))) (let ((.cse13 (+ main_~i~0 6))) (and .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 48)) .cse13) (<= .cse13 .cse2) (<= .cse2 .cse13))))) [2020-08-19 02:47:25,602 INFO L264 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|)))) [2020-08-19 02:47:25,602 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-08-19 02:47:25,602 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-08-19 02:47:25,602 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-08-19 02:47:25,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,623 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,623 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,623 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,623 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,624 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,624 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,624 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,624 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,627 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,628 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,628 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,628 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,631 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,643 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,643 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,645 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,645 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,645 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,645 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,646 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,646 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,646 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,646 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,647 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,647 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,647 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,647 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,648 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,648 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,648 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,648 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,649 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,649 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,649 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,649 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,649 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,650 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,650 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,650 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,650 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:47:25 BoogieIcfgContainer [2020-08-19 02:47:25,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:47:25,655 INFO L168 Benchmark]: Toolchain (without parser) took 11020.39 ms. Allocated memory was 138.4 MB in the beginning and 319.8 MB in the end (delta: 181.4 MB). Free memory was 100.8 MB in the beginning and 138.9 MB in the end (delta: -38.1 MB). Peak memory consumption was 143.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:47:25,656 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 02:47:25,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.25 ms. Allocated memory is still 138.4 MB. Free memory was 100.6 MB in the beginning and 90.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:47:25,658 INFO L168 Benchmark]: Boogie Preprocessor took 147.56 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 177.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:47:25,658 INFO L168 Benchmark]: RCFGBuilder took 358.97 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 163.0 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:47:25,659 INFO L168 Benchmark]: TraceAbstraction took 10200.03 ms. Allocated memory was 200.8 MB in the beginning and 319.8 MB in the end (delta: 119.0 MB). Free memory was 163.0 MB in the beginning and 138.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:47:25,662 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.25 ms. Allocated memory is still 138.4 MB. Free memory was 100.6 MB in the beginning and 90.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.56 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 177.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.97 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 163.0 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10200.03 ms. Allocated memory was 200.8 MB in the beginning and 319.8 MB in the end (delta: 119.0 MB). Free memory was 163.0 MB in the beginning and 138.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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 - InvariantResult [Line: 26]: Loop Invariant [2020-08-19 02:47:25,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,681 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,681 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,681 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,681 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,683 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,683 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,683 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,683 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,683 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,684 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,684 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,684 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,684 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,684 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,685 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,685 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,685 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,687 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,687 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,687 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,688 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,688 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,688 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,688 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,689 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,689 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,689 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,689 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:47:25,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((((((((ad1 == 0 && i + 7 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 56] == i + 7) && unknown-#memory_int-unknown[pa][pa] <= i + 7) || (((ad1 == 0 && i + 4 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 32]) && i + 4 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 4)) || ((ad1 == 0 && unknown-#memory_int-unknown[pa][pa] <= i) && i == unknown-#memory_int-unknown[ad1][i * 8 + ad1])) || ((i + 10 == unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 80] == i + 10)) || (((i + 3 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 24] && ad1 == 0) && unknown-#memory_int-unknown[pa][pa] <= i + 3) && i + 3 <= unknown-#memory_int-unknown[pa][pa])) || (((ad1 == 0 && i + 8 <= unknown-#memory_int-unknown[pa][pa]) && i + 8 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 64]) && unknown-#memory_int-unknown[pa][pa] <= i + 8)) || (((i + 1 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 8] == i + 1) && unknown-#memory_int-unknown[pa][pa] <= i + 1)) || (((unknown-#memory_int-unknown[pa][pa] <= i + 5 && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 40] == i + 5) && i + 5 <= unknown-#memory_int-unknown[pa][pa])) || (((i + 9 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 72] == i + 9) && unknown-#memory_int-unknown[pa][pa] <= i + 9)) || (((ad1 == 0 && i + 2 <= unknown-#memory_int-unknown[pa][pa]) && i + 2 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 16]) && unknown-#memory_int-unknown[pa][pa] <= i + 2)) || (((ad1 == 0 && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 48] == i + 6) && i + 6 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 6) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 13, TraceHistogramMax: 12, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 122 SDslu, 661 SDs, 0 SdLazy, 896 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 20 PreInvPairs, 32 NumberOfFragments, 406 HoareAnnotationTreeSize, 20 FomulaSimplifications, 343 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1565 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 326 ConstructedInterpolants, 0 QuantifiedInterpolants, 68375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 112/572 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...