/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:02:34,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:02:34,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:02:34,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:02:34,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:02:34,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:02:34,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:02:34,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:02:34,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:02:34,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:02:34,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:02:34,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:02:34,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:02:34,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:02:34,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:02:34,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:02:34,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:02:34,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:02:34,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:02:34,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:02:34,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:02:34,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:02:34,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:02:34,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:02:34,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:02:34,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:02:34,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:02:34,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:02:34,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:02:34,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:02:34,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:02:34,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:02:34,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:02:34,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:02:34,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:02:34,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:02:34,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:02:34,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:02:34,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:02:34,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:02:34,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:02:34,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 17:02:34,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:02:34,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:02:34,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:02:34,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:02:34,765 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:02:34,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:02:34,765 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:02:34,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:02:34,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:02:34,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:02:34,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:02:34,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:02:34,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:02:34,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:02:34,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:02:34,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:02:34,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:02:34,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:02:34,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:02:34,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:02:34,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:02:34,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:02:34,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:02:34,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:02:34,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:02:34,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:02:34,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:02:34,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:02:34,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:02:34,771 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:02:35,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:02:35,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:02:35,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:02:35,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:02:35,123 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:02:35,124 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann04.c [2020-08-18 17:02:35,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70765390a/6d4239c752f747ca8a142146f0185083/FLAG20da7a11b [2020-08-18 17:02:35,624 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:02:35,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann04.c [2020-08-18 17:02:35,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70765390a/6d4239c752f747ca8a142146f0185083/FLAG20da7a11b [2020-08-18 17:02:36,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70765390a/6d4239c752f747ca8a142146f0185083 [2020-08-18 17:02:36,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:02:36,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:02:36,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:02:36,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:02:36,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:02:36,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:02:36" (1/1) ... [2020-08-18 17:02:36,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4e209a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36, skipping insertion in model container [2020-08-18 17:02:36,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:02:36" (1/1) ... [2020-08-18 17:02:36,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:02:36,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:02:36,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:02:36,272 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:02:36,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:02:36,299 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:02:36,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36 WrapperNode [2020-08-18 17:02:36,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:02:36,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:02:36,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:02:36,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:02:36,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36" (1/1) ... [2020-08-18 17:02:36,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36" (1/1) ... [2020-08-18 17:02:36,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36" (1/1) ... [2020-08-18 17:02:36,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36" (1/1) ... [2020-08-18 17:02:36,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36" (1/1) ... [2020-08-18 17:02:36,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36" (1/1) ... [2020-08-18 17:02:36,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36" (1/1) ... [2020-08-18 17:02:36,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:02:36,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:02:36,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:02:36,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:02:36,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:02:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:02:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:02:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-08-18 17:02:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:02:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:02:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:02:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-08-18 17:02:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:02:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:02:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:02:36,666 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:02:36,666 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 17:02:36,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:02:36 BoogieIcfgContainer [2020-08-18 17:02:36,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:02:36,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:02:36,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:02:36,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:02:36,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:02:36" (1/3) ... [2020-08-18 17:02:36,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17509713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:02:36, skipping insertion in model container [2020-08-18 17:02:36,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:36" (2/3) ... [2020-08-18 17:02:36,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17509713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:02:36, skipping insertion in model container [2020-08-18 17:02:36,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:02:36" (3/3) ... [2020-08-18 17:02:36,679 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2020-08-18 17:02:36,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:02:36,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:02:36,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:02:36,744 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:02:36,744 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:02:36,744 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:02:36,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:02:36,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:02:36,745 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:02:36,745 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:02:36,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:02:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-08-18 17:02:36,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 17:02:36,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:36,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:36,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:36,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1796234678, now seen corresponding path program 1 times [2020-08-18 17:02:36,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:36,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486176042] [2020-08-18 17:02:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:36,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:02:37,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486176042] [2020-08-18 17:02:37,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:02:37,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:02:37,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5989715] [2020-08-18 17:02:37,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:02:37,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:37,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:02:37,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:02:37,111 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-08-18 17:02:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:37,245 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2020-08-18 17:02:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:02:37,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-08-18 17:02:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:37,259 INFO L225 Difference]: With dead ends: 55 [2020-08-18 17:02:37,260 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 17:02:37,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:02:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 17:02:37,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-18 17:02:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 17:02:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-08-18 17:02:37,314 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2020-08-18 17:02:37,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:37,315 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-08-18 17:02:37,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:02:37,315 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-08-18 17:02:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 17:02:37,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:37,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:37,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:02:37,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:37,320 INFO L82 PathProgramCache]: Analyzing trace with hash -895156504, now seen corresponding path program 1 times [2020-08-18 17:02:37,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:37,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72347355] [2020-08-18 17:02:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 17:02:37,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72347355] [2020-08-18 17:02:37,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:37,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 17:02:37,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429674749] [2020-08-18 17:02:37,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:02:37,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:37,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:02:37,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:02:37,486 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-08-18 17:02:37,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:37,647 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2020-08-18 17:02:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:02:37,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-08-18 17:02:37,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:37,651 INFO L225 Difference]: With dead ends: 43 [2020-08-18 17:02:37,652 INFO L226 Difference]: Without dead ends: 39 [2020-08-18 17:02:37,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:02:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-18 17:02:37,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-18 17:02:37,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 17:02:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2020-08-18 17:02:37,666 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 22 [2020-08-18 17:02:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:37,667 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2020-08-18 17:02:37,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:02:37,667 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2020-08-18 17:02:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-18 17:02:37,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:37,670 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:37,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:02:37,670 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:37,671 INFO L82 PathProgramCache]: Analyzing trace with hash 687949058, now seen corresponding path program 2 times [2020-08-18 17:02:37,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:37,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479940386] [2020-08-18 17:02:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 17:02:37,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479940386] [2020-08-18 17:02:37,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:37,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-08-18 17:02:37,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425693774] [2020-08-18 17:02:37,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:02:37,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:37,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:02:37,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:02:37,802 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand 4 states. [2020-08-18 17:02:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:37,873 INFO L93 Difference]: Finished difference Result 74 states and 133 transitions. [2020-08-18 17:02:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:02:37,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-08-18 17:02:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:37,877 INFO L225 Difference]: With dead ends: 74 [2020-08-18 17:02:37,877 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 17:02:37,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:02:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 17:02:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 17:02:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 17:02:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 66 transitions. [2020-08-18 17:02:37,894 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 66 transitions. Word has length 29 [2020-08-18 17:02:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:37,895 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 66 transitions. [2020-08-18 17:02:37,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:02:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2020-08-18 17:02:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-18 17:02:37,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:37,898 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:37,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:02:37,899 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:37,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1711672813, now seen corresponding path program 1 times [2020-08-18 17:02:37,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:37,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240145004] [2020-08-18 17:02:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-08-18 17:02:38,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240145004] [2020-08-18 17:02:38,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:38,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-18 17:02:38,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078051107] [2020-08-18 17:02:38,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:02:38,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:38,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:02:38,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:02:38,119 INFO L87 Difference]: Start difference. First operand 43 states and 66 transitions. Second operand 5 states. [2020-08-18 17:02:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:38,188 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2020-08-18 17:02:38,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:02:38,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-08-18 17:02:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:38,191 INFO L225 Difference]: With dead ends: 47 [2020-08-18 17:02:38,191 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 17:02:38,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:02:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 17:02:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 17:02:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 17:02:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 65 transitions. [2020-08-18 17:02:38,204 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 65 transitions. Word has length 42 [2020-08-18 17:02:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:38,205 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 65 transitions. [2020-08-18 17:02:38,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:02:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 65 transitions. [2020-08-18 17:02:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 17:02:38,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:38,208 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:38,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:02:38,209 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:38,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1732137516, now seen corresponding path program 2 times [2020-08-18 17:02:38,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:38,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098829268] [2020-08-18 17:02:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:02:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 54 proven. 29 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-08-18 17:02:38,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098829268] [2020-08-18 17:02:38,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:38,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 17:02:38,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659760467] [2020-08-18 17:02:38,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 17:02:38,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:38,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 17:02:38,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:02:38,562 INFO L87 Difference]: Start difference. First operand 43 states and 65 transitions. Second operand 14 states. [2020-08-18 17:02:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:39,436 INFO L93 Difference]: Finished difference Result 166 states and 476 transitions. [2020-08-18 17:02:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 17:02:39,437 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-08-18 17:02:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:39,445 INFO L225 Difference]: With dead ends: 166 [2020-08-18 17:02:39,446 INFO L226 Difference]: Without dead ends: 131 [2020-08-18 17:02:39,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=990, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 17:02:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-18 17:02:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 69. [2020-08-18 17:02:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 17:02:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 133 transitions. [2020-08-18 17:02:39,483 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 133 transitions. Word has length 62 [2020-08-18 17:02:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:39,483 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 133 transitions. [2020-08-18 17:02:39,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 17:02:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 133 transitions. [2020-08-18 17:02:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 17:02:39,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:39,490 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:39,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:02:39,490 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash -599460358, now seen corresponding path program 3 times [2020-08-18 17:02:39,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:39,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764712480] [2020-08-18 17:02:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:02:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:02:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 36 proven. 62 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-08-18 17:02:39,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764712480] [2020-08-18 17:02:39,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:39,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 17:02:39,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252514739] [2020-08-18 17:02:39,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:02:39,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:39,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:02:39,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:02:39,683 INFO L87 Difference]: Start difference. First operand 69 states and 133 transitions. Second operand 6 states. [2020-08-18 17:02:39,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:39,795 INFO L93 Difference]: Finished difference Result 113 states and 272 transitions. [2020-08-18 17:02:39,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:02:39,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-08-18 17:02:39,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:39,800 INFO L225 Difference]: With dead ends: 113 [2020-08-18 17:02:39,800 INFO L226 Difference]: Without dead ends: 109 [2020-08-18 17:02:39,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:02:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-18 17:02:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-08-18 17:02:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 17:02:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 267 transitions. [2020-08-18 17:02:39,845 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 267 transitions. Word has length 95 [2020-08-18 17:02:39,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:39,846 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 267 transitions. [2020-08-18 17:02:39,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:02:39,847 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 267 transitions. [2020-08-18 17:02:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-08-18 17:02:39,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:39,853 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 19, 12, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:39,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:02:39,853 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:39,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:39,854 INFO L82 PathProgramCache]: Analyzing trace with hash 93748169, now seen corresponding path program 4 times [2020-08-18 17:02:39,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:39,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155501926] [2020-08-18 17:02:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:02:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:02:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:02:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:02:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:02:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 17:02:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:02:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 349 proven. 666 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2020-08-18 17:02:40,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155501926] [2020-08-18 17:02:40,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:40,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 17:02:40,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111185019] [2020-08-18 17:02:40,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:02:40,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:40,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:02:40,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:02:40,495 INFO L87 Difference]: Start difference. First operand 109 states and 267 transitions. Second operand 9 states. [2020-08-18 17:02:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:40,709 INFO L93 Difference]: Finished difference Result 199 states and 592 transitions. [2020-08-18 17:02:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:02:40,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2020-08-18 17:02:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:40,712 INFO L225 Difference]: With dead ends: 199 [2020-08-18 17:02:40,713 INFO L226 Difference]: Without dead ends: 98 [2020-08-18 17:02:40,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:02:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-18 17:02:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-08-18 17:02:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 17:02:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 177 transitions. [2020-08-18 17:02:40,731 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 177 transitions. Word has length 214 [2020-08-18 17:02:40,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:40,732 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 177 transitions. [2020-08-18 17:02:40,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:02:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 177 transitions. [2020-08-18 17:02:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 17:02:40,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:40,734 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:40,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:02:40,735 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:40,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2010206023, now seen corresponding path program 5 times [2020-08-18 17:02:40,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:40,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948361571] [2020-08-18 17:02:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:02:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:41,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:41,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 17:02:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:41,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:41,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 147 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-08-18 17:02:41,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948361571] [2020-08-18 17:02:41,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:41,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:02:41,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344437480] [2020-08-18 17:02:41,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:02:41,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:41,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:02:41,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:02:41,071 INFO L87 Difference]: Start difference. First operand 98 states and 177 transitions. Second operand 16 states. [2020-08-18 17:02:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:41,911 INFO L93 Difference]: Finished difference Result 254 states and 664 transitions. [2020-08-18 17:02:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 17:02:41,912 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-08-18 17:02:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:41,916 INFO L225 Difference]: With dead ends: 254 [2020-08-18 17:02:41,916 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 17:02:41,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=382, Invalid=1424, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 17:02:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 17:02:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 110. [2020-08-18 17:02:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-18 17:02:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 191 transitions. [2020-08-18 17:02:41,938 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 191 transitions. Word has length 108 [2020-08-18 17:02:41,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:41,939 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 191 transitions. [2020-08-18 17:02:41,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:02:41,939 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 191 transitions. [2020-08-18 17:02:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 17:02:41,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:41,942 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:41,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:02:41,942 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:41,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1835077495, now seen corresponding path program 6 times [2020-08-18 17:02:41,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:41,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066239459] [2020-08-18 17:02:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:41,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:02:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:02:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 17:02:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:02:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 153 proven. 289 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-08-18 17:02:42,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066239459] [2020-08-18 17:02:42,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:42,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:02:42,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258860940] [2020-08-18 17:02:42,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:02:42,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:42,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:02:42,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:02:42,344 INFO L87 Difference]: Start difference. First operand 110 states and 191 transitions. Second operand 16 states. [2020-08-18 17:02:43,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:43,308 INFO L93 Difference]: Finished difference Result 298 states and 723 transitions. [2020-08-18 17:02:43,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-18 17:02:43,309 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2020-08-18 17:02:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:43,313 INFO L225 Difference]: With dead ends: 298 [2020-08-18 17:02:43,314 INFO L226 Difference]: Without dead ends: 187 [2020-08-18 17:02:43,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 17:02:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-08-18 17:02:43,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 132. [2020-08-18 17:02:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 17:02:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 233 transitions. [2020-08-18 17:02:43,334 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 233 transitions. Word has length 134 [2020-08-18 17:02:43,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:43,335 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 233 transitions. [2020-08-18 17:02:43,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:02:43,335 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 233 transitions. [2020-08-18 17:02:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 17:02:43,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:43,348 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:43,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:02:43,348 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:43,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1434361927, now seen corresponding path program 7 times [2020-08-18 17:02:43,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:43,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623965351] [2020-08-18 17:02:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:02:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:02:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:02:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 17:02:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:02:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:43,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:02:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 446 proven. 274 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-08-18 17:02:44,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623965351] [2020-08-18 17:02:44,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:44,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 17:02:44,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831362129] [2020-08-18 17:02:44,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 17:02:44,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:44,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 17:02:44,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-08-18 17:02:44,073 INFO L87 Difference]: Start difference. First operand 132 states and 233 transitions. Second operand 22 states. [2020-08-18 17:02:46,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:46,384 INFO L93 Difference]: Finished difference Result 397 states and 989 transitions. [2020-08-18 17:02:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-08-18 17:02:46,384 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 160 [2020-08-18 17:02:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:46,392 INFO L225 Difference]: With dead ends: 397 [2020-08-18 17:02:46,392 INFO L226 Difference]: Without dead ends: 273 [2020-08-18 17:02:46,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1975 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1232, Invalid=6078, Unknown=0, NotChecked=0, Total=7310 [2020-08-18 17:02:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-18 17:02:46,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 167. [2020-08-18 17:02:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-18 17:02:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 326 transitions. [2020-08-18 17:02:46,440 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 326 transitions. Word has length 160 [2020-08-18 17:02:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:46,441 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 326 transitions. [2020-08-18 17:02:46,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 17:02:46,442 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 326 transitions. [2020-08-18 17:02:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-18 17:02:46,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:46,446 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:46,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:02:46,447 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:46,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:46,447 INFO L82 PathProgramCache]: Analyzing trace with hash -66876812, now seen corresponding path program 8 times [2020-08-18 17:02:46,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:46,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053705409] [2020-08-18 17:02:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:02:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:02:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:02:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 17:02:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:47,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:47,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:47,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:02:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:02:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 17:02:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 503 proven. 360 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-08-18 17:02:47,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053705409] [2020-08-18 17:02:47,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:47,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-18 17:02:47,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525351733] [2020-08-18 17:02:47,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-18 17:02:47,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:47,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-18 17:02:47,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2020-08-18 17:02:47,123 INFO L87 Difference]: Start difference. First operand 167 states and 326 transitions. Second operand 23 states. [2020-08-18 17:02:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:49,381 INFO L93 Difference]: Finished difference Result 464 states and 1249 transitions. [2020-08-18 17:02:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-08-18 17:02:49,382 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 173 [2020-08-18 17:02:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:49,409 INFO L225 Difference]: With dead ends: 464 [2020-08-18 17:02:49,409 INFO L226 Difference]: Without dead ends: 305 [2020-08-18 17:02:49,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1399, Invalid=6973, Unknown=0, NotChecked=0, Total=8372 [2020-08-18 17:02:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-08-18 17:02:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 199. [2020-08-18 17:02:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-18 17:02:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 415 transitions. [2020-08-18 17:02:49,449 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 415 transitions. Word has length 173 [2020-08-18 17:02:49,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:49,450 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 415 transitions. [2020-08-18 17:02:49,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-18 17:02:49,450 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 415 transitions. [2020-08-18 17:02:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-08-18 17:02:49,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:49,458 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:49,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:02:49,458 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:49,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1028004289, now seen corresponding path program 9 times [2020-08-18 17:02:49,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:49,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846562146] [2020-08-18 17:02:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:02:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:02:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:02:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:02:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 17:02:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:02:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:50,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:02:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:02:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:50,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 17:02:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:50,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 17:02:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2020-08-18 17:02:50,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846562146] [2020-08-18 17:02:50,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:02:50,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-18 17:02:50,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730853404] [2020-08-18 17:02:50,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-18 17:02:50,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:50,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-18 17:02:50,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-08-18 17:02:50,141 INFO L87 Difference]: Start difference. First operand 199 states and 415 transitions. Second operand 25 states. [2020-08-18 17:02:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:51,680 INFO L93 Difference]: Finished difference Result 342 states and 714 transitions. [2020-08-18 17:02:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-08-18 17:02:51,680 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 186 [2020-08-18 17:02:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:51,681 INFO L225 Difference]: With dead ends: 342 [2020-08-18 17:02:51,681 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 17:02:51,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=869, Invalid=3687, Unknown=0, NotChecked=0, Total=4556 [2020-08-18 17:02:51,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 17:02:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 17:02:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 17:02:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 17:02:51,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 186 [2020-08-18 17:02:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:51,691 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 17:02:51,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-18 17:02:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 17:02:51,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 17:02:51,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 17:02:51,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 17:02:52,193 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-08-18 17:02:52,387 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-08-18 17:02:52,781 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-08-18 17:02:53,108 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-08-18 17:02:53,283 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-08-18 17:02:53,394 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-08-18 17:02:53,540 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-08-18 17:02:53,656 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-08-18 17:02:53,772 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-08-18 17:02:53,920 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-08-18 17:02:54,040 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-08-18 17:02:54,931 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-08-18 17:02:55,310 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-08-18 17:02:55,432 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-08-18 17:02:55,932 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 77 [2020-08-18 17:02:58,249 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 10 [2020-08-18 17:03:00,890 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 342 DAG size of output: 47 [2020-08-18 17:03:01,078 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 11 [2020-08-18 17:03:01,123 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 17:03:01,124 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 17:03:01,124 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 17:03:01,124 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 17:03:01,124 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 17:03:01,124 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 17:03:01,124 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 14 22) no Hoare annotation was computed. [2020-08-18 17:03:01,124 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 14 22) the Hoare annotation is: true [2020-08-18 17:03:01,125 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (not (= ackermann_~m 0)) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|)) [2020-08-18 17:03:01,125 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-08-18 17:03:01,125 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (not (= ackermann_~m 0)) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2020-08-18 17:03:01,125 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (let ((.cse7 (<= |ackermann_#in~n| 1)) (.cse1 (<= 4 |ackermann_#t~ret1|)) (.cse5 (<= |ackermann_#in~n| 2)) (.cse6 (<= 6 |ackermann_#t~ret1|)) (.cse0 (not (= ackermann_~m 0))) (.cse8 (<= 5 |ackermann_#t~ret1|)) (.cse2 (<= ackermann_~m 1)) (.cse4 (<= 3 |ackermann_#t~ret1|)) (.cse3 (= ackermann_~m |ackermann_#in~m|))) (and (or (= |ackermann_#in~n| 1) (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5) .cse6 (and (<= 2 |ackermann_#res|) .cse7)) (or .cse7 (<= |ackermann_#in~m| 1) (and .cse8 (<= |ackermann_#in~m| 2)) .cse6) (let ((.cse9 (= ackermann_~n |ackermann_#in~n|))) (or (and (<= |ackermann_#in~n| 3) .cse0 .cse1 .cse2 .cse9 .cse3) (and .cse0 .cse5 .cse9) (and .cse6 .cse0 .cse9) (and .cse0 .cse8 .cse9 (<= |ackermann_#in~n| 4)))) (or (and (<= 2 |ackermann_#t~ret1|) .cse2 .cse3) (and .cse4 .cse3)))) [2020-08-18 17:03:01,125 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-08-18 17:03:01,126 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-08-18 17:03:01,126 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-08-18 17:03:01,126 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-08-18 17:03:01,126 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 14 22) no Hoare annotation was computed. [2020-08-18 17:03:01,126 INFO L268 CegarLoopResult]: For program point L33(lines 33 38) no Hoare annotation was computed. [2020-08-18 17:03:01,127 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-08-18 17:03:01,127 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 45) the Hoare annotation is: true [2020-08-18 17:03:01,127 INFO L268 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-08-18 17:03:01,127 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 45) no Hoare annotation was computed. [2020-08-18 17:03:01,127 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 45) no Hoare annotation was computed. [2020-08-18 17:03:01,127 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-08-18 17:03:01,127 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-08-18 17:03:01,127 INFO L271 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: true [2020-08-18 17:03:01,128 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-08-18 17:03:01,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:03:01 BoogieIcfgContainer [2020-08-18 17:03:01,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:03:01,138 INFO L168 Benchmark]: Toolchain (without parser) took 25113.10 ms. Allocated memory was 138.4 MB in the beginning and 604.0 MB in the end (delta: 465.6 MB). Free memory was 102.0 MB in the beginning and 417.3 MB in the end (delta: -315.3 MB). Peak memory consumption was 486.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:03:01,139 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-18 17:03:01,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.07 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-18 17:03:01,147 INFO L168 Benchmark]: Boogie Preprocessor took 100.02 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 179.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-18 17:03:01,153 INFO L168 Benchmark]: RCFGBuilder took 270.38 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 166.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-18 17:03:01,154 INFO L168 Benchmark]: TraceAbstraction took 24461.46 ms. Allocated memory was 200.8 MB in the beginning and 604.0 MB in the end (delta: 403.2 MB). Free memory was 165.7 MB in the beginning and 417.3 MB in the end (delta: -251.6 MB). Peak memory consumption was 487.6 MB. Max. memory is 7.1 GB. [2020-08-18 17:03:01,159 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.07 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.02 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 179.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.38 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 166.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24461.46 ms. Allocated memory was 200.8 MB in the beginning and 604.0 MB in the end (delta: 403.2 MB). Free memory was 165.7 MB in the beginning and 417.3 MB in the end (delta: -251.6 MB). Peak memory consumption was 487.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.9s, OverallIterations: 12, TraceHistogramMax: 31, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 327 SDtfs, 288 SDslu, 1318 SDs, 0 SdLazy, 4278 SolverSat, 1203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6208 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 383 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 825 PreInvPairs, 2911 NumberOfFragments, 159 HoareAnnotationTreeSize, 825 FomulaSimplifications, 2616823 FormulaSimplificationTreeSizeReduction, 6.4s HoareSimplificationTime, 9 FomulaSimplificationsInter, 62963 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1240 NumberOfCodeBlocks, 1240 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1228 ConstructedInterpolants, 0 QuantifiedInterpolants, 315418 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 1 PerfectInterpolantSequences, 6785/8692 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...