/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:01:14,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:01:14,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:01:14,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:01:14,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:01:14,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:01:14,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:01:14,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:01:14,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:01:14,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:01:14,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:01:14,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:01:14,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:01:14,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:01:14,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:01:14,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:01:14,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:01:14,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:01:14,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:01:14,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:01:14,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:01:14,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:01:14,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:01:14,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:01:14,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:01:14,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:01:14,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:01:14,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:01:14,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:01:14,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:01:14,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:01:14,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:01:14,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:01:14,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:01:14,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:01:14,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:01:14,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:01:14,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:01:14,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:01:14,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:01:14,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:01:14,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:01:14,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:01:14,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:01:14,675 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:01:14,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:01:14,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:01:14,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:01:14,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:01:14,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:01:14,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:01:14,677 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 23:01:14,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:01:14,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:01:14,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:01:15,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:01:15,001 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:01:15,001 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2020-08-22 23:01:15,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8c4c55f/ce6dac02bdf242f691546c3712006e17/FLAGa2c6e5cd0 [2020-08-22 23:01:15,527 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:01:15,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2020-08-22 23:01:15,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8c4c55f/ce6dac02bdf242f691546c3712006e17/FLAGa2c6e5cd0 [2020-08-22 23:01:15,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8c4c55f/ce6dac02bdf242f691546c3712006e17 [2020-08-22 23:01:15,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:01:15,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:01:15,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:15,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:01:15,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:01:15,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:15" (1/1) ... [2020-08-22 23:01:15,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c5a158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:15, skipping insertion in model container [2020-08-22 23:01:15,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:15" (1/1) ... [2020-08-22 23:01:15,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:01:15,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:01:16,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:16,120 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:01:16,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:16,148 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:01:16,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16 WrapperNode [2020-08-22 23:01:16,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:16,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:01:16,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:01:16,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:01:16,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16" (1/1) ... [2020-08-22 23:01:16,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16" (1/1) ... [2020-08-22 23:01:16,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16" (1/1) ... [2020-08-22 23:01:16,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16" (1/1) ... [2020-08-22 23:01:16,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16" (1/1) ... [2020-08-22 23:01:16,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16" (1/1) ... [2020-08-22 23:01:16,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16" (1/1) ... [2020-08-22 23:01:16,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:01:16,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:01:16,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:01:16,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:01:16,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:01:16,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:01:16,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:01:16,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:01:16,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:01:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:01:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:01:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 23:01:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:01:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:01:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:01:16,513 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:01:16,513 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:01:16,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:16 BoogieIcfgContainer [2020-08-22 23:01:16,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:01:16,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:01:16,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:01:16,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:01:16,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:01:15" (1/3) ... [2020-08-22 23:01:16,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307afd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:16, skipping insertion in model container [2020-08-22 23:01:16,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:16" (2/3) ... [2020-08-22 23:01:16,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307afd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:16, skipping insertion in model container [2020-08-22 23:01:16,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:16" (3/3) ... [2020-08-22 23:01:16,527 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2020-08-22 23:01:16,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:01:16,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:01:16,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:01:16,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:01:16,621 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:01:16,621 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:01:16,621 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:01:16,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:01:16,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:01:16,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:01:16,622 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:01:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-22 23:01:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 23:01:16,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:16,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:16,653 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:16,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:16,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1430370880, now seen corresponding path program 1 times [2020-08-22 23:01:16,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:16,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319528906] [2020-08-22 23:01:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:16,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319528906] [2020-08-22 23:01:16,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:16,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 23:01:16,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225711186] [2020-08-22 23:01:16,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 23:01:16,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:16,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 23:01:16,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 23:01:16,831 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-08-22 23:01:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:16,861 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-08-22 23:01:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 23:01:16,863 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-08-22 23:01:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:16,872 INFO L225 Difference]: With dead ends: 40 [2020-08-22 23:01:16,873 INFO L226 Difference]: Without dead ends: 21 [2020-08-22 23:01:16,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 23:01:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-22 23:01:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-22 23:01:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-22 23:01:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-08-22 23:01:16,922 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2020-08-22 23:01:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:16,923 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-08-22 23:01:16,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 23:01:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-08-22 23:01:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 23:01:16,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:16,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:16,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:01:16,929 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:16,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:16,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1911322683, now seen corresponding path program 1 times [2020-08-22 23:01:16,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:16,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890324752] [2020-08-22 23:01:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:17,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:17,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890324752] [2020-08-22 23:01:17,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:17,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:01:17,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424439233] [2020-08-22 23:01:17,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:01:17,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:17,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:01:17,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:01:17,096 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-08-22 23:01:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:17,176 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-08-22 23:01:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 23:01:17,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 23:01:17,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:17,178 INFO L225 Difference]: With dead ends: 45 [2020-08-22 23:01:17,178 INFO L226 Difference]: Without dead ends: 27 [2020-08-22 23:01:17,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:01:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-22 23:01:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-08-22 23:01:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-22 23:01:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-22 23:01:17,189 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 13 [2020-08-22 23:01:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:17,189 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-22 23:01:17,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:01:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-22 23:01:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 23:01:17,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:17,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:17,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:01:17,191 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash -4953541, now seen corresponding path program 1 times [2020-08-22 23:01:17,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:17,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688857720] [2020-08-22 23:01:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:17,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:17,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688857720] [2020-08-22 23:01:17,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:01:17,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 23:01:17,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041887732] [2020-08-22 23:01:17,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 23:01:17,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:17,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 23:01:17,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:01:17,363 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-08-22 23:01:17,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:17,477 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-08-22 23:01:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 23:01:17,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-08-22 23:01:17,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:17,479 INFO L225 Difference]: With dead ends: 52 [2020-08-22 23:01:17,479 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 23:01:17,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-22 23:01:17,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 23:01:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-08-22 23:01:17,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 23:01:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-08-22 23:01:17,489 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2020-08-22 23:01:17,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:17,490 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-08-22 23:01:17,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 23:01:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-08-22 23:01:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 23:01:17,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:17,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:17,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:01:17,494 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:17,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:17,495 INFO L82 PathProgramCache]: Analyzing trace with hash 628881157, now seen corresponding path program 2 times [2020-08-22 23:01:17,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:17,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501200451] [2020-08-22 23:01:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:17,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:17,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501200451] [2020-08-22 23:01:17,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:01:17,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 23:01:17,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091243568] [2020-08-22 23:01:17,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 23:01:17,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:17,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 23:01:17,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 23:01:17,744 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-08-22 23:01:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:17,921 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-08-22 23:01:17,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 23:01:17,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-08-22 23:01:17,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:17,923 INFO L225 Difference]: With dead ends: 66 [2020-08-22 23:01:17,923 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 23:01:17,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-08-22 23:01:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 23:01:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-08-22 23:01:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 23:01:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-08-22 23:01:17,934 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 27 [2020-08-22 23:01:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:17,934 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-08-22 23:01:17,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:01:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-08-22 23:01:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 23:01:17,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:17,936 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:17,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 23:01:17,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1577865979, now seen corresponding path program 3 times [2020-08-22 23:01:17,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:17,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223798045] [2020-08-22 23:01:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:18,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:18,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223798045] [2020-08-22 23:01:18,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:01:18,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 23:01:18,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078482839] [2020-08-22 23:01:18,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 23:01:18,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:18,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 23:01:18,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 23:01:18,115 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 11 states. [2020-08-22 23:01:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:18,368 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2020-08-22 23:01:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 23:01:18,369 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-08-22 23:01:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:18,370 INFO L225 Difference]: With dead ends: 80 [2020-08-22 23:01:18,371 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 23:01:18,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-08-22 23:01:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 23:01:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-08-22 23:01:18,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-22 23:01:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-08-22 23:01:18,384 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 34 [2020-08-22 23:01:18,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:18,387 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-08-22 23:01:18,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 23:01:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-08-22 23:01:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 23:01:18,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:18,389 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:18,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 23:01:18,391 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:18,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:18,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1087419973, now seen corresponding path program 4 times [2020-08-22 23:01:18,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:18,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621077560] [2020-08-22 23:01:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:18,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621077560] [2020-08-22 23:01:18,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:01:18,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 23:01:18,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747011467] [2020-08-22 23:01:18,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 23:01:18,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:18,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 23:01:18,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-22 23:01:18,691 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 13 states. [2020-08-22 23:01:19,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:19,024 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-08-22 23:01:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 23:01:19,025 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-08-22 23:01:19,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:19,026 INFO L225 Difference]: With dead ends: 62 [2020-08-22 23:01:19,026 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 23:01:19,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-08-22 23:01:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 23:01:19,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-08-22 23:01:19,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-22 23:01:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-08-22 23:01:19,037 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 41 [2020-08-22 23:01:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:19,037 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-08-22 23:01:19,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 23:01:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-08-22 23:01:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 23:01:19,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:19,039 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:19,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 23:01:19,040 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1795298373, now seen corresponding path program 5 times [2020-08-22 23:01:19,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:19,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841107373] [2020-08-22 23:01:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:19,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841107373] [2020-08-22 23:01:19,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:01:19,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 23:01:19,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660779335] [2020-08-22 23:01:19,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 23:01:19,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:19,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 23:01:19,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 23:01:19,257 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 11 states. [2020-08-22 23:01:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:19,498 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-08-22 23:01:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 23:01:19,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-08-22 23:01:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:19,500 INFO L225 Difference]: With dead ends: 79 [2020-08-22 23:01:19,500 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:01:19,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-08-22 23:01:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:01:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:01:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:01:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:01:19,502 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-08-22 23:01:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:19,502 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:01:19,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 23:01:19,502 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:01:19,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:01:19,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 23:01:19,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:01:19,970 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:01:19,971 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:01:19,971 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:01:19,971 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:01:19,971 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:01:19,971 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:01:19,972 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 12 32) the Hoare annotation is: true [2020-08-22 23:01:19,972 INFO L264 CegarLoopResult]: At program point L21(lines 21 22) the Hoare annotation is: (or (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 2) (< 0 (+ (div main_~len~0 4294967296) 1))) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2020-08-22 23:01:19,972 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 22) the Hoare annotation is: (or (and (<= main_~len~0 1) (<= 1 main_~len~0)) (and (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= main_~len~0 0) (<= 0 main_~len~0)) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2020-08-22 23:01:19,972 INFO L264 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-08-22 23:01:19,973 INFO L264 CegarLoopResult]: At program point L19-3(line 19) the Hoare annotation is: (or (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 2) (< 0 (+ (div main_~len~0 4294967296) 1))) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2020-08-22 23:01:19,973 INFO L264 CegarLoopResult]: At program point L19-4(lines 19 27) the Hoare annotation is: (or (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 2) (< 0 (+ (div main_~len~0 4294967296) 1))) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2020-08-22 23:01:19,973 INFO L264 CegarLoopResult]: At program point L19-5(lines 19 27) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-08-22 23:01:19,973 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 12 32) the Hoare annotation is: true [2020-08-22 23:01:19,973 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2020-08-22 23:01:19,973 INFO L271 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-08-22 23:01:19,974 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (and (<= main_~len~0 1) (<= 1 main_~len~0)) (and (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= main_~len~0 0) (<= 0 main_~len~0)) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2020-08-22 23:01:19,974 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (or (and (<= |main_#t~post1| 0) (<= main_~len~0 0) (<= 0 |main_#t~post1|) (<= 0 main_~len~0)) (and (<= |main_#t~post1| 1) (<= 1 |main_#t~post1|) (<= main_~len~0 1) (<= 1 main_~len~0)) (and (<= 2 |main_#t~post1|) (<= |main_#t~post1| 2) (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= |main_#t~post1| 3) (<= main_~len~0 3) (<= 3 |main_#t~post1|) (<= 3 main_~len~0))) [2020-08-22 23:01:19,974 INFO L264 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: (or (and (<= |main_#t~post1| 3) (<= 3 |main_#t~post1|) (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= |main_#t~post1| 0) (<= main_~len~0 1) (<= 1 main_~len~0) (<= 0 |main_#t~post1|)) (and (<= 2 |main_#t~post1|) (<= |main_#t~post1| 2) (<= main_~len~0 3) (<= 3 main_~len~0)) (and (<= main_~len~0 2) (<= 2 main_~len~0) (<= |main_#t~post1| 1) (<= 1 |main_#t~post1|))) [2020-08-22 23:01:19,975 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (<= 4 main_~len~0) (<= main_~len~0 4)) [2020-08-22 23:01:19,975 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~len~0 0) (<= 0 main_~len~0)) [2020-08-22 23:01:19,975 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-08-22 23:01:19,975 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-22 23:01:19,975 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: true [2020-08-22 23:01:19,975 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:01:19,976 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:01:19,976 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:01:19,976 INFO L271 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2020-08-22 23:01:19,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:01:19 BoogieIcfgContainer [2020-08-22 23:01:19,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:01:19,998 INFO L168 Benchmark]: Toolchain (without parser) took 4094.18 ms. Allocated memory was 140.0 MB in the beginning and 244.8 MB in the end (delta: 104.9 MB). Free memory was 104.6 MB in the beginning and 182.7 MB in the end (delta: -78.1 MB). Peak memory consumption was 108.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:19,999 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.10 ms. Allocated memory is still 140.0 MB. Free memory was 104.4 MB in the beginning and 94.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,001 INFO L168 Benchmark]: Boogie Preprocessor took 112.69 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 94.9 MB in the beginning and 182.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,002 INFO L168 Benchmark]: RCFGBuilder took 255.82 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 170.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,003 INFO L168 Benchmark]: TraceAbstraction took 3476.40 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 169.7 MB in the beginning and 182.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,007 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 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.10 ms. Allocated memory is still 140.0 MB. Free memory was 104.4 MB in the beginning and 94.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.69 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 94.9 MB in the beginning and 182.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 255.82 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 170.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3476.40 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 169.7 MB in the beginning and 182.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((4 <= len && len <= 4) || (len <= 2 && 0 < len / 4294967296 + 1)) || (len <= 3 && 3 <= len) - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 154 SDtfs, 91 SDslu, 778 SDs, 0 SdLazy, 619 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 18 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 88 PreInvPairs, 155 NumberOfFragments, 306 HoareAnnotationTreeSize, 88 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 28 FomulaSimplificationsInter, 215 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 34872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 21/155 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...